Dual Boot Win 7 Ult/Win 10 Pro 1903 x64 - Win10 Startup Failure

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  1. Ex_Brit
    Posts : 803
    Win10 Pro - x64 latest build dual boot w/Win 11 Pro
       New #1

    Dual Boot Win 7 Ult/Win 10 Pro 1903 x64 - Win10 Startup Failure


    I have EasyBCD installed on my C: Win 7 drive and up until today I could freely boot between that and O: Win 10.
    Suddenly I get a black failure screen telling my it can't find the Win 10 boot file. I've tried booting a Win 10 Pro 1903 x64 disk and doing Advanced Options, Startup Repair and it fails.
    I am currently doing a chkddsk O: /r and will do an sfc later.
    Meanwhile I tried reinstalling EasyBCD and letting it auto-configure and will check how that works out when my file checks are finished.

    A question: will this work or do I have to change that first drive letter to C:?
    sfc /Scannow /OFFBOOTDIR=O:\ /OFFWINDIR=O:\Windows
    Dual Boot Win 7 Ult/Win 10 Pro 1903 x64 - Win10 Startup Failure-capture.jpg
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  3. zbook
    Posts : 41,476
    windows 10 professional version 1607 build 14393.969 64 bit
       New #2

    Ex_Brit said:
    I have EasyBCD installed on my C: Win 7 drive and up until today I could freely boot between that and O: Win 10.
    Suddenly I get a black failure screen telling my it can't find the Win 10 boot file. I've tried booting a Win 10 Pro 1903 x64 disk and doing Advanced Options, Startup Repair and it fails.
    I am currently doing a chkddsk O: /r and will do an sfc later.
    Meanwhile I tried reinstalling EasyBCD and letting it auto-configure and will check how that works out when my file checks are finished.

    A question: will this work or do I have to change that first drive letter to C:?


    Dual Boot Win 7 Ult/Win 10 Pro 1903 x64 - Win10 Startup Failure-capture.jpg

    For the scannow command open diskpart and run lis vol > post an image into the thread

    The first drive letter is the location for the boot files or system reserved partition.
    The second drive letter is the location for the Windows partition.


    If it is confirmed using lis vol then run: sfc /scannow /offbootdir=C:\ /offwindir=O:\windows
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  4. Ex_Brit
    Posts : 803
    Win10 Pro - x64 latest build dual boot w/Win 11 Pro
    Thread Starter
       New #3

    The lis vol is as follows:

    Dual Boot Win 7 Ult/Win 10 Pro 1903 x64 - Win10 Startup Failure-capture.jpg

    When I try to run sfc as suggested it gives an error: Windows Resource Protection could not start the repair service even when I try different drive letters for BCD location.
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  6. zbook
    Posts : 41,476
    windows 10 professional version 1607 build 14393.969 64 bit
       New #4

    Copy and paste this command so that detailed information is displayed:

    Code:
    diskpart
lis dis
lis vol
sel dis 0 
det dis
lis par
sel par 1
det par
sel par 2
det par
sel par 3
det par
sel par 4
det par
sel par 5
det par
sel par 6
det par
sel par 7
det par
sel par 8
det par
sel par 9
det par
sel par 10
det par
sel dis 1 
det dis
lis par
sel par 1
det par
sel par 2
det par
sel par 3
det par
sel par 4
det par
sel par 5
det par
sel par 6
det par
sel par 7
det par
sel par 8
det par
sel par 9
det par
sel par 10
det par
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  7. Ex_Brit
    Posts : 803
    Win10 Pro - x64 latest build dual boot w/Win 11 Pro
    Thread Starter
       New #5

    I got it working by using a Windows 7 Ultimate SP1 x64 disc/Startup Repair run twice.......now all is working OK, except for Firefox for some unknown reason. That wasn't my default browser anyway, so is irrelevant.
    Thanks very much for the help, do you still want me to run the above?
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  8. zbook
    Posts : 41,476
    windows 10 professional version 1607 build 14393.969 64 bit
       New #6

    Glad that you got it.


    If you can please post the results.
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  9. Ex_Brit
    Posts : 803
    Win10 Pro - x64 latest build dual boot w/Win 11 Pro
    Thread Starter
       New #7

    Thank you ;-)

    Type : ATA
    Status : Online
    Path : 0
    Target : 0
    LUN ID : 0
    Location Path : PCIROOT(0)#ATA(C00T00L00)
    Current Read-only State : No
    Read-only : No
    Boot Disk : Yes
    Pagefile Disk : Yes
    Hibernation File Disk : No
    Crashdump Disk : Yes
    Clustered Disk : No

    Volume ### Ltr Label Fs Type Size Status Info
    ---------- --- ----------- ----- ---------- ------- --------- --------
    Volume 2 C Win 7 Ult NTFS Partition 465 GB Healthy System

    DISKPART> lis par

    Partition ### Type Size Offset
    ------------- ---------------- ------- -------
    Partition 1 Primary 465 GB 31 KB

    DISKPART> sel par 1

    Partition 1 is now the selected partition.

    DISKPART> det par

    Partition 1
    Type : 07
    Hidden: No
    Active: Yes
    Offset in Bytes: 32256

    Volume ### Ltr Label Fs Type Size Status Info
    ---------- --- ----------- ----- ---------- ------- --------- --------
    * Volume 2 C Win 7 Ult NTFS Partition 465 GB Healthy System

    DISKPART> sel par 2

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 3

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 4

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 5

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 6

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 7

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 8

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 9

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 10

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel dis 1

    Disk 1 is now the selected disk.

    DISKPART> det dis

    WDC WD5003AZEX-00K1GA0
    Disk ID: EA8A5111
    Type : ATA
    Status : Online
    Path : 0
    Target : 1
    LUN ID : 0
    Location Path : PCIROOT(0)#ATA(C00T01L00)
    Current Read-only State : No
    Read-only : No
    Boot Disk : No
    Pagefile Disk : No
    Hibernation File Disk : No
    Crashdump Disk : No
    Clustered Disk : No

    Volume ### Ltr Label Fs Type Size Status Info
    ---------- --- ----------- ----- ---------- ------- --------- --------
    Volume 3 L Spare NTFS Partition 465 GB Healthy

    DISKPART> lis par

    Partition ### Type Size Offset
    ------------- ---------------- ------- -------
    Partition 1 Primary 465 GB 1024 KB

    DISKPART> sel par 1

    Partition 1 is now the selected partition.

    DISKPART> det par

    Partition 1
    Type : 07
    Hidden: No
    Active: Yes
    Offset in Bytes: 1048576

    Volume ### Ltr Label Fs Type Size Status Info
    ---------- --- ----------- ----- ---------- ------- --------- --------
    * Volume 3 L Spare NTFS Partition 465 GB Healthy

    DISKPART> sel par 2

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 3

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 4

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 5

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 6

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 7

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 8

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 9

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par

    There is no partition selected.
    Please select a partition and try again.

    DISKPART> sel par 10

    The specified partition is not valid.
    Please select a valid partition.

    There is no partition selected.

    DISKPART> det par
    Regards
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  10. zbook
    Posts : 41,476
    windows 10 professional version 1607 build 14393.969 64 bit
       New #8

    How many disk drives are there?
    It was not seen on disk 0 and 1 with detailed partitions.

    Disk Management may be the starting location.
    Then diskpart commands on the applicable disk.

    Open disk management > by default some columns are compressed > widen each Status and Volume > make sure the contents within the parenthesis are in full view and that none of the characters are cutoff > view disk 0 > widen this row as needed so that all of the characters are in full view > post an image into the thread
    Disk Management - How to Post a Screenshot of

    This is the tutorial on the scannow command:
    Run SFC Command in Windows 10

    Option #2
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  12. Ex_Brit
    Posts : 803
    Win10 Pro - x64 latest build dual boot w/Win 11 Pro
    Thread Starter
       New #9

    Dual Boot Win 7 Ult/Win 10 Pro 1903 x64 - Win10 Startup Failure-exhibita.jpg

    Dual Boot Win 7 Ult/Win 10 Pro 1903 x64 - Win10 Startup Failure-exhibitb.jpg
      My Computer
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  13. zbook
    Posts : 41,476
    windows 10 professional version 1607 build 14393.969 64 bit
       New #10

    Copy and paste into administrative command prompt or powershell:

    Code:
    diskpart
lis dis
lis vol
sel dis 0 
det dis
lis par
sel par 1
det par
sel par 2
det par
sel dis 1 
det dis
lis par
sel par 1
det par
sel par 2
det par
sel dis 2 
det dis
lis par
sel par 1
det par
sel par 2
det par
sel par 3
det par
sel par 4
det par
sel par 5
det par
sel par 6
det par
sel dis 7 
det dis
lis par
sel par 1
det par
sel par 2
det par
sel par 3
det par
sel par 4
det par
sel par 5
det par
sel par 6
det par
sel dis 7 
det dis
      My Computer
    Quote Quote

 

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