Windows 10: Help using MBR2GPT on my system

  1.    19 Mar 2018 #1

    Help using MBR2GPT on my system


    I've been trying to install Windows 1607 as a dual boot, thread How to downgrade Windows 10 from 1709 to 1607 - Windows 10 Forums. The question came up about converting from MBR to GPT. It's not working for me.
    I want to make a separate thread for this particular problem.
    Here's my disk configuration:
    Click image for larger version. 

Name:	image.png 
Views:	2 
Size:	143.7 KB 
ID:	181555
    I run mbr2gpt /verify with disk 0 and disk1, and they both give me errors. What I want to do is install 1607 on the F: partition. It would be nice to convert disk 1 also.
    Here are the logs:
    PHP Code:
    2018-03-19 18:51:36Info                         MBR2GPT was explicitly asked to run in full OS mode.
    2018-03-19 18:51:36Info                         MBR2GPTAttempting to validate disk 0
    2018
    -03-19 18:51:36Info                         MBR2GPTRetrieving layout of disk
    2018
    -03-19 18:51:36Info                         MBR2GPTInitial partition information
    2018
    -03-19 18:51:36Info                         ===========================================================
    2018-03-19 18:51:36Info                         Partition layout for disk0
    2018
    -03-19 18:51:36Info                         Partition style          MBR
    2018
    -03-19 18:51:36Info                         MBR signature555597164
    2018
    -03-19 18:51:36Info                         Number of partitions     3
    2018
    -03-19 18:51:36Info                         ===================PARTITION===============================
    2018-03-19 18:51:36Info                              Number1
    2018
    -03-19 18:51:36Info                                Type7
    2018
    -03-19 18:51:36Info                                BootYes
    2018
    -03-19 18:51:36Info                          RecognizedYes
    2018
    -03-19 18:51:36Info                               Style0
    2018
    -03-19 18:51:36Info                              Offset1048576
    2018
    -03-19 18:51:36Info                              Length104857600
    2018
    -03-19 18:51:36Info                              Volume: \\?\Volume{5e494090-47af-11e5-88cf-806e6f6e6963}\
    2018-03-19 18:51:36Info                               DriveNone
    2018
    -03-19 18:51:36Info                             NT Path: \Device\HardDisk0\Partition1
    2018
    -03-19 18:51:36Info                         ===================PARTITION===============================
    2018-03-19 18:51:36Info                              Number2
    2018
    -03-19 18:51:36Info                                Type7
    2018
    -03-19 18:51:36Info                                BootNo
    2018
    -03-19 18:51:36Info                          RecognizedYes
    2018
    -03-19 18:51:36Info                               Style0
    2018
    -03-19 18:51:36Info                              Offset105906176
    2018
    -03-19 18:51:36Info                              Length446313791488
    2018
    -03-19 18:51:36Info                              Volume: \\?\Volume{5e494091-47af-11e5-88cf-806e6f6e6963}\
    2018-03-19 18:51:36Info                               DriveD:\
    2018-03-19 18:51:36Info                             NT Path: \Device\HardDisk0\Partition2
    2018
    -03-19 18:51:36Info                         ===================PARTITION===============================
    2018-03-19 18:51:36Info                              Number3
    2018
    -03-19 18:51:36Info                                Type7
    2018
    -03-19 18:51:36Info                                BootNo
    2018
    -03-19 18:51:36Info                          RecognizedYes
    2018
    -03-19 18:51:36Info                               Style0
    2018
    -03-19 18:51:36Info                              Offset446419697664
    2018
    -03-19 18:51:36Info                              Length53688139776
    2018
    -03-19 18:51:36Info                              Volume: \\?\Volume{211dbd6c-0000-0000-0000-b0f067000000}\
    2018-03-19 18:51:36Info                               DriveF:\
    2018-03-19 18:51:36Info                             NT Path: \Device\HardDisk0\Partition3
    2018
    -03-19 18:51:36Info                         ===========================================================
    2018-03-19 18:51:36Info                         ESP partition size will be 104857600
    2018
    -03-19 18:51:36Info                         MBR2GPTValidating layoutdisk sector size is512 bytes
    2018
    -03-19 18:51:36Info                         BCDOpening storeFlags0x0
    2018
    -03-19 18:51:36Info                         BCDStore path"\??\GLOBALROOT\device\harddisk0\partition1\Boot\BCD"
    2018-03-19 18:51:36Info                         BCDLoaded hive at BCD00000000
    2018
    -03-19 18:51:36Info                         BCDOpening object {9dea862c-5cdd-4e70-acc1-f32b344d4795}
    2018-03-19 18:51:36Info                         FindOSPartitions: Default boot entry: {455E0EEC-DECE-11E7-B5B4-EACDE0BAAC56}
    2018-03-19 18:51:36Info                         BCDOpening object {455e0eec-dece-11e7-b5b4-eacde0baac56}
    2018-03-19 18:51:36Info                         VERBOSEDevice path: \Device\HarddiskVolume3
    2018
    -03-19 18:51:36Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume3
    2018
    -03-19 18:51:36Info                         FindOSPartitionsVolume name for the default boot entry: \\?\Volume{5e494092-47af-11e5-88cf-806e6f6e6963}\
    2018-03-19 18:51:36Info                         BCDOpening object {a0455270-dece-11e7-b5b4-eacde0baac56}
    2018-03-19 18:51:36Info                         VERBOSEDevice path: \Device\HarddiskVolume4
    2018
    -03-19 18:51:36Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume4
    2018
    -03-19 18:51:36Info                         FindOSPartitionsVolume name for the recovery boot entry: \\?\Volume{f68c1638-0000-0000-0000-801c3a000000}\
    2018-03-19 18:51:36Info                         FindOSPartitionsWIM path for the recovery boot entry: \Recovery\WindowsRE\Winre.wim
    2018
    -03-19 18:51:36Info                         FindOSPartitions: Default boot entry localeen-US
    2018
    -03-19 18:51:36Error                        Cannot find OS partition(s) for disk 0
    2018
    -03-19 18:51:47Info                         MBR2GPT was explicitly asked to run in full OS mode.
    2018-03-19 18:51:47Info                         MBR2GPTAttempting to validate disk 1
    2018
    -03-19 18:51:47Info                         MBR2GPTRetrieving layout of disk
    2018
    -03-19 18:51:47Info                         MBR2GPTInitial partition information
    2018
    -03-19 18:51:47Info                         ===========================================================
    2018-03-19 18:51:47Info                         Partition layout for disk1
    2018
    -03-19 18:51:47Info                         Partition style          MBR
    2018
    -03-19 18:51:47Info                         MBR signature4136375864
    2018
    -03-19 18:51:47Info                         Number of partitions     2
    2018
    -03-19 18:51:47Info                         ===================PARTITION===============================
    2018-03-19 18:51:47Info                              Number1
    2018
    -03-19 18:51:47Info                                Type7
    2018
    -03-19 18:51:47Info                                BootNo
    2018
    -03-19 18:51:47Info                          RecognizedYes
    2018
    -03-19 18:51:47Info                               Style0
    2018
    -03-19 18:51:47Info                              Offset1048576
    2018
    -03-19 18:51:47Info                              Length249585205248
    2018
    -03-19 18:51:47Info                              Volume: \\?\Volume{5e494092-47af-11e5-88cf-806e6f6e6963}\
    2018-03-19 18:51:47Info                               DriveC:\
    2018-03-19 18:51:47Info                             NT Path: \Device\HardDisk1\Partition1
    2018
    -03-19 18:51:47Info                         ===================PARTITION===============================
    2018-03-19 18:51:47Info                              Number2
    2018
    -03-19 18:51:47Info                                Type39
    2018
    -03-19 18:51:47Info                                BootNo
    2018
    -03-19 18:51:47Info                          RecognizedYes
    2018
    -03-19 18:51:47Info                               Style0
    2018
    -03-19 18:51:47Info                              Offset249586253824
    2018
    -03-19 18:51:47Info                              Length471859200
    2018
    -03-19 18:51:47Info                              Volume: \\?\Volume{f68c1638-0000-0000-0000-801c3a000000}\
    2018-03-19 18:51:47Info                               DriveNone
    2018
    -03-19 18:51:47Info                             NT Path: \Device\HardDisk1\Partition2
    2018
    -03-19 18:51:47Info                         ===========================================================
    2018-03-19 18:51:47Info                         ESP partition size will be 104857600
    2018
    -03-19 18:51:47Info                         MBR2GPTValidating layoutdisk sector size is512 bytes
    2018
    -03-19 18:51:47Error                        ValidateLayoutWrong boot partition countexpected 1 but found 0.
    2018
    -03-19 18:51:47Error                        Disk layout validation failed for disk 1 
    PHP Code:
    2018-03-19 18:51:36Error                        Cannot find OS partition(s) for disk 0
    2018
    -03-19 18:51:47Error                        ValidateLayoutWrong boot partition countexpected 1 but found 0.
    2018
    -03-19 18:51:47Error                        Disk layout validation failed for disk 1 
    F: used to be unallocated space as a logical partition. I changed that to a primarty to satisfy one of mbr2gpt's rules. Can I define F as a system partition and would that allow the conversion.
    Disk 1 already has a system partition (I think), C:, but there's something else it doesn't like.

    If you can figure out what's wrong here, please tell me what to fix.
    Thank you.
      My ComputerSystem Spec

  2.    19 Mar 2018 #2

    I made F: a boot partition, so it now reads Boot: Yes. No change.
    The problem appears to be in these log messages:
    PHP Code:
    2018-03-19 18:51:36Info                         BCDOpening storeFlags0x0
    2018
    -03-19 18:51:36Info                         BCDStore path"\??\GLOBALROOT\device\harddisk0\partition1\Boot\BCD"
    2018-03-19 18:51:36Info                         BCDLoaded hive at BCD00000000
    2018
    -03-19 18:51:36Info                         BCDOpening object {9dea862c-5cdd-4e70-acc1-f32b344d4795}
    2018-03-19 18:51:36Info                         FindOSPartitions: Default boot entry: {455E0EEC-DECE-11E7-B5B4-EACDE0BAAC56}
    2018-03-19 18:51:36Info                         BCDOpening object {455e0eec-dece-11e7-b5b4-eacde0baac56}
    2018-03-19 18:51:36Info                         VERBOSEDevice path: \Device\HarddiskVolume3
    2018
    -03-19 18:51:36Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume3
    2018
    -03-19 18:51:36Info                         FindOSPartitionsVolume name for the default boot entry: \\?\Volume{5e494092-47af-11e5-88cf-806e6f6e6963}\
    2018-03-19 18:51:36Info                         BCDOpening object {a0455270-dece-11e7-b5b4-eacde0baac56}
    2018-03-19 18:51:36Info                         VERBOSEDevice path: \Device\HarddiskVolume4
    2018
    -03-19 18:51:36Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume4
    2018
    -03-19 18:51:36Info                         FindOSPartitionsVolume name for the recovery boot entry: \\?\Volume{f68c1638-0000-0000-0000-801c3a000000}\
    2018-03-19 18:51:36Info                         FindOSPartitionsWIM path for the recovery boot entry: \Recovery\WindowsRE\Winre.wim
    2018
    -03-19 18:51:36Info                         FindOSPartitions: Default boot entry localeen-US
    2018
    -03-19 18:51:36Error                        Cannot find OS partition(s) for disk 0 
    I don't understand any of it, so someone please help!
      My ComputerSystem Spec

  3.    19 Mar 2018 #3

    Regarding Disk 1... I don't know why C: is Boot: No. The Disk Management SS shows it as Boot. I don't want to fiddle with C: without knowing what I am doing. What can I do to make mbr2gpt see it as a boot partition?
      My ComputerSystem Spec

  4. Bree's Avatar
    Posts : 8,848
    10 Home x64 (1809) (10 Pro on 2nd pc)
       19 Mar 2018 #4

    mrolle said: View Post
    Regarding Disk 1... I don't know why C: is Boot: No. The Disk Management SS shows it as Boot. I don't want to fiddle with C: without knowing what I am doing. What can I do to make mbr2gpt see it as a boot partition?
    I replied on the other thread regarding this, but I'll repeat it here in case you haven't seen it. It's worth reading the replies to that mbr2gpt tutorial as other have had similar issues.

    Code:
    2018-03-19 18:51:36, Error                        Cannot find OS partition(s) for disk 0
    this was raised in post #2 and solved in post #16.


    Code:
    2018-03-19 18:51:47, Error                        Disk layout validation failed for disk 1
    Another poster asked about that in post #19, also resolved eventually.

    That tutorial thread runs to nine pages, there's probably a lot more useful info later on.
      My ComputersSystem Spec

  5.    20 Mar 2018 #5

    The problem is the dual boot nature of the pc.

    Your system reserved partition for Drive 1 is on drive 0.

    So when you try to use MBR2GPT, it falls over.

    What you need to do is to shrink C drive a bit and copy the system Reserved Partition fron drive 0 to drive 1.

    Then disconnect drive 0 and check drive 1 boots ok.

    Then you will be able to use mbr2gpt on drive 1.

    Then you can swap drives and boot into drive 0 and run mbr2gpt on that drive.

    Now connect both drives and change pc to boot from UEFI and set bios to boot from drive 1.

    Then boot from drive 1 and type following from admin prompt

    bcdboot F:\windows to restore dual boot menu.
      My ComputerSystem Spec

  6.    20 Mar 2018 #6

    cereberus said: View Post
    The problem is the dual boot nature of the pc.

    Your system reserved partition for Drive 1 is on drive 0.

    So when you try to use MBR2GPT, it falls over.

    What you need to do is to shrink C drive a bit and copy the system Reserved Partition fron drive 0 to drive 1.
    I don't really have a dual boot system. When I did the 7 to 10 upgrade, somehow it left 7 as a second system on the boot menu, though I never tried it to see if it worked. Since then, I've used bcdedit to remove the entry for 7.

    Can you unconfuse me about a couple of other things. (1) How come C: is on disk 1 and D: is on disk 0. I bought disk 0 more recently, and then I probably wanted to use C: just for things that I could only put on C: and put everything else on D:. But how does the BIOS know which SATA port is 0 and which is 1 anyway? If I switched the two connectors, would the numbering switch too?
    (2) You're saying that the System Reserve is necessary to boot the system? I didn't know that.

    I'll try the moving the System Reserve to the other disk.
      My ComputerSystem Spec

  7.    20 Mar 2018 #7

    Bigger problem -- BCD store is missing!


    I just ran bcdedit command, and it says it cannot find the bcd store.

    It must be around somewhere, because the system can boot up. My store has two boot loader records. The second one is just a dummy so that I can get into the boot selection menu and get into the advanced boot options. This still works.

    I'm worried that I may lose it altogether and then I'd be hosed.

    Someone please tell me how to recover the store. I want to do that before I fiddle with anything else.

    Thanks.
      My ComputerSystem Spec

  8.    20 Mar 2018 #8

    Starting over after system recovery


    As reported above, I lost my bcd store. I tried command prompt in recovery tools to rebuild the boot data, but the bootrec /rebuild command failed. So I had to go back to a recent system image.
    My current disk configuration is
    Click image for larger version. 

Name:	image.png 
Views:	1 
Size:	152.4 KB 
ID:	181643
    bcdedit gives me:
    PHP Code:
    Windows Boot Manager
    --------------------
    identifier              {bootmgr}
    device                  partition=\Device\HarddiskVolume1
    description             Windows Boot Manager
    locale                  en
    -US
    inherit                 
    {globalsettings}
    default                 {
    current}
    resumeobject            {455e0eeb-dece-11e7-b5b4-eacde0baac56}
    displayorder            {current}
    toolsdisplayorder       {memdiag}
    timeout                 5

    Windows Boot Loader
    -------------------
    identifier              {current}
    device                  partition=C:
    path                    \WINDOWS\system32\winload.exe
    description             Windows 10
    locale                  en
    -US
    loadoptions             DDISABLE_INTEGRITY_CHECKS
    inherit                 
    {bootloadersettings}
    recoverysequence        {a0455270-dece-11e7-b5b4-eacde0baac56}
    displaymessageoverride  StartupRepair
    recoveryenabled         Yes
    testsigning             Yes
    allowedinmemorysettings 0x15000075
    osdevice                partition
    =C:
    systemroot              \WINDOWS
    resumeobject            
    {455e0eeb-dece-11e7-b5b4-eacde0baac56}
    nx                      OptIn
    bootmenupolicy          Standard
    debug                   Yes 
    mbr2gpt gives me:
    PHP Code:
    C:\WINDOWS\system32>mbr2gpt /allowfullos /validate /disk:0
    MBR2GPT
    Attempting to validate disk 0
    MBR2GPT
    Retrieving layout of disk
    MBR2GPT
    Validating layoutdisk sector size is512 bytes
    Cannot find OS partition
    (s) for disk 0

    C
    :\WINDOWS\system32>mbr2gpt /allowfullos /validate /disk:1
    MBR2GPT
    Attempting to validate disk 1
    MBR2GPT
    Retrieving layout of disk
    MBR2GPT
    Validating layoutdisk sector size is512 bytes
    Disk layout validation failed 
    for disk 1

    C
    :\WINDOWS\system32>type ..\setupact.log

    < for disk 0... >

    2018-03-20 12:56:12Info                         MBR2GPT was explicitly asked to run in full OS mode.
    2018-03-20 12:56:12Info                         MBR2GPTSystem disk number is 0
    2018
    -03-20 12:56:12Info                         MBR2GPTAttempting to validate disk 0
    2018
    -03-20 12:56:12Info                         MBR2GPTRetrieving layout of disk
    2018
    -03-20 12:56:12Info                         MBR2GPTInitial partition information
    2018
    -03-20 12:56:12Info                         ===========================================================
    2018-03-20 12:56:12Info                         Partition layout for disk0
    2018
    -03-20 12:56:12Info                         Partition style          MBR
    2018
    -03-20 12:56:12Info                         MBR signature555597164
    2018
    -03-20 12:56:12Info                         Number of partitions     2
    2018
    -03-20 12:56:12Info                         ===================PARTITION===============================
    2018-03-20 12:56:12Info                              Number1
    2018
    -03-20 12:56:12Info                                Type7
    2018
    -03-20 12:56:12Info                                BootYes
    2018
    -03-20 12:56:12Info                          RecognizedYes
    2018
    -03-20 12:56:12Info                               Style0
    2018
    -03-20 12:56:12Info                              Offset1048576
    2018
    -03-20 12:56:12Info                              Length104857600
    2018
    -03-20 12:56:12Info                              Volume: \\?\Volume{5e494090-47af-11e5-88cf-806e6f6e6963}\
    2018-03-20 12:56:12Info                               DriveNone
    2018
    -03-20 12:56:12Info                             NT Path: \Device\HardDisk0\Partition1
    2018
    -03-20 12:56:12Info                         ===================PARTITION===============================
    2018-03-20 12:56:12Info                              Number2
    2018
    -03-20 12:56:12Info                                Type7
    2018
    -03-20 12:56:12Info                                BootNo
    2018
    -03-20 12:56:12Info                          RecognizedYes
    2018
    -03-20 12:56:12Info                               Style0
    2018
    -03-20 12:56:12Info                              Offset105906176
    2018
    -03-20 12:56:12Info                              Length500000882688
    2018
    -03-20 12:56:12Info                              Volume: \\?\Volume{5e494091-47af-11e5-88cf-806e6f6e6963}\
    2018-03-20 12:56:12Info                               DriveD:\
    2018-03-20 12:56:12Info                             NT Path: \Device\HardDisk0\Partition2
    2018
    -03-20 12:56:12Info                         ===========================================================
    2018-03-20 12:56:12Info                         ESP partition size will be 104857600
    2018
    -03-20 12:56:12Info                         MBR2GPTValidating layoutdisk sector size is512 bytes
    2018
    -03-20 12:56:12Info                         BCDOpening storeFlags0x0
    2018
    -03-20 12:56:12Info                         BCDStore path"\??\GLOBALROOT\device\harddisk0\partition1\Boot\BCD"
    2018-03-20 12:56:12Info                         BCDLoaded hive at BCD00000000
    2018
    -03-20 12:56:12Info                         BCDOpening object {9dea862c-5cdd-4e70-acc1-f32b344d4795}
    2018-03-20 12:56:12Info                         FindOSPartitions: Default boot entry: {455E0EEC-DECE-11E7-B5B4-EACDE0BAAC5
    6
    }
    2018-03-20 12:56:12Info                         BCDOpening object {455e0eec-dece-11e7-b5b4-eacde0baac56}
    2018-03-20 12:56:12Info                         VERBOSEDevice path: \Device\HarddiskVolume3
    2018
    -03-20 12:56:12Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume3
    2018
    -03-20 12:56:12Info                         FindOSPartitionsVolume name for the default boot entry: \\?\Volume{5e494
    092
    -47af-11e5-88cf-806e6f6e6963}\
    2018-03-20 12:56:12Info                         BCDOpening object {a0455270-dece-11e7-b5b4-eacde0baac56}
    2018-03-20 12:56:12Info                         VERBOSEDevice path: \Device\HarddiskVolume4
    2018
    -03-20 12:56:12Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume4
    2018
    -03-20 12:56:12Info                         FindOSPartitionsVolume name for the recovery boot entry: \\?\Volume{f68c
    1638
    -0000-0000-0000-801c3a000000}\
    2018-03-20 12:56:12Info                         FindOSPartitionsWIM path for the recovery boot entry: \Recovery\WindowsR
    E
    \Winre.wim
    2018
    -03-20 12:56:12Info                         FindOSPartitions: Default boot entry localeen-US
    2018
    -03-20 12:56:12Error                        Cannot find OS partition(s) for disk 0
    2018
    -03-20 12:56:19Info                         MBR2GPT was explicitly asked to run in full OS mode.
    2018-03-20 12:56:19Info                         MBR2GPTAttempting to validate disk 0
    2018
    -03-20 12:56:19Info                         MBR2GPTRetrieving layout of disk
    2018
    -03-20 12:56:19Info                         MBR2GPTInitial partition information
    2018
    -03-20 12:56:19Info                         ===========================================================
    2018-03-20 12:56:19Info                         Partition layout for disk0
    2018
    -03-20 12:56:19Info                         Partition style          MBR
    2018
    -03-20 12:56:19Info                         MBR signature555597164
    2018
    -03-20 12:56:19Info                         Number of partitions     2
    2018
    -03-20 12:56:19Info                         ===================PARTITION===============================
    2018-03-20 12:56:19Info                              Number1
    2018
    -03-20 12:56:19Info                                Type7
    2018
    -03-20 12:56:19Info                                BootYes
    2018
    -03-20 12:56:19Info                          RecognizedYes
    2018
    -03-20 12:56:19Info                               Style0
    2018
    -03-20 12:56:19Info                              Offset1048576
    2018
    -03-20 12:56:19Info                              Length104857600
    2018
    -03-20 12:56:19Info                              Volume: \\?\Volume{5e494090-47af-11e5-88cf-806e6f6e6963}\
    2018-03-20 12:56:19Info                               DriveNone
    2018
    -03-20 12:56:19Info                             NT Path: \Device\HardDisk0\Partition1
    2018
    -03-20 12:56:19Info                         ===================PARTITION===============================
    2018-03-20 12:56:19Info                              Number2
    2018
    -03-20 12:56:19Info                                Type7
    2018
    -03-20 12:56:19Info                                BootNo
    2018
    -03-20 12:56:19Info                          RecognizedYes
    2018
    -03-20 12:56:19Info                               Style0
    2018
    -03-20 12:56:19Info                              Offset105906176
    2018
    -03-20 12:56:19Info                              Length500000882688
    2018
    -03-20 12:56:19Info                              Volume: \\?\Volume{5e494091-47af-11e5-88cf-806e6f6e6963}\
    2018-03-20 12:56:19Info                               DriveD:\
    2018-03-20 12:56:19Info                             NT Path: \Device\HardDisk0\Partition2
    2018
    -03-20 12:56:19Info                         ===========================================================
    2018-03-20 12:56:19Info                         ESP partition size will be 104857600
    2018
    -03-20 12:56:19Info                         MBR2GPTValidating layoutdisk sector size is512 bytes
    2018
    -03-20 12:56:19Info                         BCDOpening storeFlags0x0
    2018
    -03-20 12:56:19Info                         BCDStore path"\??\GLOBALROOT\device\harddisk0\partition1\Boot\BCD"
    2018-03-20 12:56:19Info                         BCDLoaded hive at BCD00000000
    2018
    -03-20 12:56:19Info                         BCDOpening object {9dea862c-5cdd-4e70-acc1-f32b344d4795}
    2018-03-20 12:56:19Info                         FindOSPartitions: Default boot entry: {455E0EEC-DECE-11E7-B5B4-EACDE0BAAC5
    6
    }
    2018-03-20 12:56:19Info                         BCDOpening object {455e0eec-dece-11e7-b5b4-eacde0baac56}
    2018-03-20 12:56:19Info                         VERBOSEDevice path: \Device\HarddiskVolume3
    2018
    -03-20 12:56:19Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume3
    2018
    -03-20 12:56:19Info                         FindOSPartitionsVolume name for the default boot entry: \\?\Volume{5e494
    092
    -47af-11e5-88cf-806e6f6e6963}\
    2018-03-20 12:56:19Info                         BCDOpening object {a0455270-dece-11e7-b5b4-eacde0baac56}
    2018-03-20 12:56:19Info                         VERBOSEDevice path: \Device\HarddiskVolume4
    2018
    -03-20 12:56:19Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume4
    2018
    -03-20 12:56:19Info                         FindOSPartitionsVolume name for the recovery boot entry: \\?\Volume{f68c
    1638
    -0000-0000-0000-801c3a000000}\
    2018-03-20 12:56:19Info                         FindOSPartitionsWIM path for the recovery boot entry: \Recovery\WindowsR
    E
    \Winre.wim
    2018
    -03-20 12:56:19Info                         FindOSPartitions: Default boot entry localeen-US
    2018
    -03-20 12:56:19Error                        Cannot find OS partition(s) for disk 0

    < for disk 1... >

    2018-03-20 12:56:24Info                         MBR2GPT was explicitly asked to run in full OS mode.
    2018-03-20 12:56:24Info                         MBR2GPTAttempting to validate disk 1
    2018
    -03-20 12:56:24Info                         MBR2GPTRetrieving layout of disk
    2018
    -03-20 12:56:24Info                         MBR2GPTInitial partition information
    2018
    -03-20 12:56:24Info                         ===========================================================
    2018-03-20 12:56:24Info                         Partition layout for disk1
    2018
    -03-20 12:56:24Info                         Partition style          MBR
    2018
    -03-20 12:56:24Info                         MBR signature4136375864
    2018
    -03-20 12:56:24Info                         Number of partitions     2
    2018
    -03-20 12:56:24Info                         ===================PARTITION===============================
    2018-03-20 12:56:24Info                              Number1
    2018
    -03-20 12:56:24Info                                Type7
    2018
    -03-20 12:56:24Info                                BootNo
    2018
    -03-20 12:56:24Info                          RecognizedYes
    2018
    -03-20 12:56:24Info                               Style0
    2018
    -03-20 12:56:24Info                              Offset1048576
    2018
    -03-20 12:56:24Info                              Length249585205248
    2018
    -03-20 12:56:24Info                              Volume: \\?\Volume{5e494092-47af-11e5-88cf-806e6f6e6963}\
    2018-03-20 12:56:24Info                               DriveC:\
    2018-03-20 12:56:24Info                             NT Path: \Device\HardDisk1\Partition1
    2018
    -03-20 12:56:24Info                         ===================PARTITION===============================
    2018-03-20 12:56:24Info                              Number2
    2018
    -03-20 12:56:24Info                                Type39
    2018
    -03-20 12:56:24Info                                BootNo
    2018
    -03-20 12:56:24Info                          RecognizedYes
    2018
    -03-20 12:56:24Info                               Style0
    2018
    -03-20 12:56:24Info                              Offset249586253824
    2018
    -03-20 12:56:24Info                              Length471859200
    2018
    -03-20 12:56:24Info                              Volume: \\?\Volume{f68c1638-0000-0000-0000-801c3a000000}\
    2018-03-20 12:56:24Info                               DriveNone
    2018
    -03-20 12:56:24Info                             NT Path: \Device\HardDisk1\Partition2
    2018
    -03-20 12:56:24Info                         ===========================================================
    2018-03-20 12:56:24Info                         ESP partition size will be 104857600
    2018
    -03-20 12:56:24Info                         MBR2GPTValidating layoutdisk sector size is512 bytes
    2018
    -03-20 12:56:24Error                        ValidateLayoutWrong boot partition countexpected 1 but found 0.
    2018
    -03-20 12:56:24Error                        Disk layout validation failed for disk 1

    C
    :\WINDOWS\system32>type ..\setuperr.log
    2018
    -03-20 12:56:12Error                        Cannot find OS partition(s) for disk 0
    2018
    -03-20 12:56:19Error                        Cannot find OS partition(s) for disk 0
    2018
    -03-20 12:56:24Error                        ValidateLayoutWrong boot partition countexpected 1 but found 0.
    2018
    -03-20 12:56:24Error                        Disk layout validation failed for disk 1 
    Last edited by mrolle; 20 Mar 2018 at 15:31.
      My ComputerSystem Spec

  9.    20 Mar 2018 #9

    You all can ignore all posts after the previous one, as I'm starting over.

    Per cereberus advice, I'll try copying the System Reserved from disk 0 to disk 1, then see if mbr2gpt works any better.

    I'd like to understand the System Reserved a bit more. From what I've read about it, this partition is used by the boot loader regardless of which actual OS I load (in a dual boot). mbr2gpt seems to want the SR to be on the same disk as the OS partition. Is this the only reason to move SR over to disk 1? Will the boot still use the SR on disk 0?

    And how does the system know which is disk 0 and disk 1 anyway? Is it written onto the disk somewhere, or is it a matter of which SATA ports they are plugged into?
      My ComputerSystem Spec

  10.    21 Mar 2018 #10

    Added system partition to disk 0. Still fails, but no longer urgent.


    I added new partition to Disk 0, and installed Windows 1607 there, as a dual boot.
    Click image for larger version. 

Name:	image.png 
Views:	1 
Size:	148.2 KB 
ID:	181766
    mbr2gpt still fails on both disks. Here is new setupact.log.
    PHP Code:
    2018-03-21 11:59:13Info                         MBR2GPT was explicitly asked to run in full OS mode.
    2018-03-21 11:59:13Info                         MBR2GPTAttempting to validate disk 0
    2018
    -03-21 11:59:13Info                         MBR2GPTRetrieving layout of disk
    2018
    -03-21 11:59:13Info                         MBR2GPTInitial partition information
    2018
    -03-21 11:59:13Info                         ===========================================================
    2018-03-21 11:59:13Info                         Partition layout for disk0
    2018
    -03-21 11:59:13Info                         Partition style          MBR
    2018
    -03-21 11:59:13Info                         MBR signature555597164
    2018
    -03-21 11:59:13Info                         Number of partitions     3
    2018
    -03-21 11:59:13Info                         ===================PARTITION===============================
    2018-03-21 11:59:13Info                              Number1
    2018
    -03-21 11:59:13Info                                Type7
    2018
    -03-21 11:59:13Info                                BootYes
    2018
    -03-21 11:59:13Info                          RecognizedYes
    2018
    -03-21 11:59:13Info                               Style0
    2018
    -03-21 11:59:13Info                              Offset1048576
    2018
    -03-21 11:59:13Info                              Length104857600
    2018
    -03-21 11:59:13Info                              Volume: \\?\Volume{5e494090-47af-11e5-88cf-806e6f6e6963}\
    2018-03-21 11:59:13Info                               DriveNone
    2018
    -03-21 11:59:13Info                             NT Path: \Device\HardDisk0\Partition1
    2018
    -03-21 11:59:13Info                         ===================PARTITION===============================
    2018-03-21 11:59:13Info                              Number2
    2018
    -03-21 11:59:13Info                                Type7
    2018
    -03-21 11:59:13Info                                BootNo
    2018
    -03-21 11:59:13Info                          RecognizedYes
    2018
    -03-21 11:59:13Info                               Style0
    2018
    -03-21 11:59:13Info                              Offset105906176
    2018
    -03-21 11:59:13Info                              Length473157337088
    2018
    -03-21 11:59:13Info                              Volume: \\?\Volume{5e494091-47af-11e5-88cf-806e6f6e6963}\
    2018-03-21 11:59:13Info                               DriveD:\
    2018-03-21 11:59:13Info                             NT Path: \Device\HardDisk0\Partition2
    2018
    -03-21 11:59:13Info                         ===================PARTITION===============================
    2018-03-21 11:59:13Info                              Number3
    2018
    -03-21 11:59:13Info                                Type7
    2018
    -03-21 11:59:13Info                                BootNo
    2018
    -03-21 11:59:13Info                          RecognizedYes
    2018
    -03-21 11:59:13Info                               Style0
    2018
    -03-21 11:59:13Info                              Offset473263243264
    2018
    -03-21 11:59:13Info                              Length26842497024
    2018
    -03-21 11:59:14Info                              Volume: \\?\Volume{211dbd6c-0000-0000-0000-b0306e000000}\
    2018-03-21 11:59:14Info                               DriveH:\
    2018-03-21 11:59:14Info                             NT Path: \Device\HardDisk0\Partition3
    2018
    -03-21 11:59:14Info                         ===========================================================
    2018-03-21 11:59:14Info                         ESP partition size will be 104857600
    2018
    -03-21 11:59:14Info                         MBR2GPTValidating layoutdisk sector size is512 bytes
    2018
    -03-21 11:59:14Info                         BCDOpening storeFlags0x0
    2018
    -03-21 11:59:14Info                         BCDStore path"\??\GLOBALROOT\device\harddisk0\partition1\Boot\BCD"
    2018-03-21 11:59:14Info                         BCDLoaded hive at BCD00000000
    2018
    -03-21 11:59:14Info                         BCDOpening object {9dea862c-5cdd-4e70-acc1-f32b344d4795}
    2018-03-21 11:59:14Info                         FindOSPartitions: Default boot entry: {455E0EEC-DECE-11E7-B5B4-EACDE0BAAC5
    6
    }
    2018-03-21 11:59:14Info                         BCDOpening object {455e0eec-dece-11e7-b5b4-eacde0baac56}
    2018-03-21 11:59:14Info                         VERBOSEDevice path: \Device\HarddiskVolume4
    2018
    -03-21 11:59:14Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume4
    2018
    -03-21 11:59:14Info                         FindOSPartitionsVolume name for the default boot entry: \\?\Volume{5e494
    092
    -47af-11e5-88cf-806e6f6e6963}\
    2018-03-21 11:59:14Info                         BCDOpening object {a0455270-dece-11e7-b5b4-eacde0baac56}
    2018-03-21 11:59:14Info                         VERBOSEDevice path: \Device\HarddiskVolume5
    2018
    -03-21 11:59:14Info                         VERBOSEDos path: \\?\GLOBALROOT\Device\HarddiskVolume5
    2018
    -03-21 11:59:14Info                         FindOSPartitionsVolume name for the recovery boot entry: \\?\Volume{f68c
    1638
    -0000-0000-0000-801c3a000000}\
    2018-03-21 11:59:14Info                         FindOSPartitionsWIM path for the recovery boot entry: \Recovery\WindowsR
    E
    \Winre.wim
    2018
    -03-21 11:59:14Info                         FindOSPartitions: Default boot entry localeen-US
    2018
    -03-21 11:59:14Error                        Cannot find OS partition(s) for disk 0

    Disk 1... >

    2018-03-21 11:59:18Info                         MBR2GPT was explicitly asked to run in full OS mode.
    2018-03-21 11:59:18Info                         MBR2GPTAttempting to validate disk 1
    2018
    -03-21 11:59:18Info                         MBR2GPTRetrieving layout of disk
    2018
    -03-21 11:59:18Info                         MBR2GPTInitial partition information
    2018
    -03-21 11:59:18Info                         ===========================================================
    2018-03-21 11:59:18Info                         Partition layout for disk1
    2018
    -03-21 11:59:18Info                         Partition style          MBR
    2018
    -03-21 11:59:18Info                         MBR signature4136375864
    2018
    -03-21 11:59:18Info                         Number of partitions     2
    2018
    -03-21 11:59:18Info                         ===================PARTITION===============================
    2018-03-21 11:59:18Info                              Number1
    2018
    -03-21 11:59:18Info                                Type7
    2018
    -03-21 11:59:18Info                                BootNo
    2018
    -03-21 11:59:18Info                          RecognizedYes
    2018
    -03-21 11:59:18Info                               Style0
    2018
    -03-21 11:59:18Info                              Offset1048576
    2018
    -03-21 11:59:18Info                              Length249585205248
    2018
    -03-21 11:59:18Info                              Volume: \\?\Volume{5e494092-47af-11e5-88cf-806e6f6e6963}\
    2018-03-21 11:59:18Info                               DriveC:\
    2018-03-21 11:59:18Info                             NT Path: \Device\HardDisk1\Partition1
    2018
    -03-21 11:59:18Info                         ===================PARTITION===============================
    2018-03-21 11:59:18Info                              Number2
    2018
    -03-21 11:59:18Info                                Type39
    2018
    -03-21 11:59:18Info                                BootNo
    2018
    -03-21 11:59:18Info                          RecognizedYes
    2018
    -03-21 11:59:18Info                               Style0
    2018
    -03-21 11:59:18Info                              Offset249586253824
    2018
    -03-21 11:59:18Info                              Length471859200
    2018
    -03-21 11:59:18Info                              Volume: \\?\Volume{f68c1638-0000-0000-0000-801c3a000000}\
    2018-03-21 11:59:18Info                               DriveNone
    2018
    -03-21 11:59:18Info                             NT Path: \Device\HardDisk1\Partition2
    2018
    -03-21 11:59:18Info                         ===========================================================
    2018-03-21 11:59:18Info                         ESP partition size will be 104857600
    2018
    -03-21 11:59:18Info                         MBR2GPTValidating layoutdisk sector size is512 bytes
    2018
    -03-21 11:59:18Error                        ValidateLayoutWrong boot partition countexpected 1 but found 0.
    2018
    -03-21 11:59:18Error                        Disk layout validation failed for disk 1 
    This is no longer critical for me, because my reason for the GPT conversion in the first place was to install a second Windows. Now that I was able to do that install with the MBR disks, it's just a matter of academic interests.

    The earlier suggestion of creating a second System Recovery partition on disk 1 is doubtful to me, since that would only make disk 1 just like disk 0. And disk 0 still doesn't pass the test. If anyone can figure out what's wrong, from the setupact.log, I'd still be interested, and it would be nice to actually do the GPT conversion. And other readers might benefit and I could mark this thread as solved.

    Here's the bcdedit output:
    PHP Code:
    Windows Boot Manager
    --------------------
    identifier              {bootmgr}
    device                  partition=\Device\HarddiskVolume1
    description             Windows Boot Manager
    locale                  en
    -US
    inherit                 
    {globalsettings}
    default                 {
    current}
    resumeobject            {455e0eeb-dece-11e7-b5b4-eacde0baac56}
    displayorder            {current}
                            {
    b181b965-2c89-11e8-9b2d-e25bbd66e567}
    toolsdisplayorder       {memdiag}
    timeout                 5

    Windows Boot Loader
    -------------------
    identifier              {current}
    device                  partition=C:
    path                    \WINDOWS\system32\winload.exe
    description             Windows 10
    locale                  en
    -US
    loadoptions             DDISABLE_INTEGRITY_CHECKS
    inherit                 
    {bootloadersettings}
    recoverysequence        {a0455270-dece-11e7-b5b4-eacde0baac56}
    displaymessageoverride  StartupRepair
    recoveryenabled         Yes
    testsigning             Yes
    allowedinmemorysettings 0x15000075
    osdevice                partition
    =C:
    systemroot              \WINDOWS
    resumeobject            
    {455e0eeb-dece-11e7-b5b4-eacde0baac56}
    nx                      OptIn
    bootmenupolicy          Standard
    debug                   Yes

    Windows Boot Loader
    -------------------
    identifier              {b181b965-2c89-11e8-9b2d-e25bbd66e567}
    device                  partition=H:
    path                    \Windows\system32\winload.exe
    description             Windows 10 1607
    locale                  en
    -US
    inherit                 
    {bootloadersettings}
    recoverysequence        {b181b966-2c89-11e8-9b2d-e25bbd66e567}
    recoveryenabled         Yes
    allowedinmemorysettings 0x15000075
    osdevice                partition
    =H:
    systemroot              \Windows
    resumeobject            
    {b181b964-2c89-11e8-9b2d-e25bbd66e567}
    nx                      OptIn
    bootmenupolicy          Standard 
      My ComputerSystem Spec


 

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