Can't Boot Into default Windows Partition

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  1. Posts : 77
    Windows 10
       #1

    Can't Boot Into default Windows Partition


    I have not been able to boot into the Windows 10 default partition for some time. I am running Windows 10 Home. Version 20H2, OS Build 19042.746.
    When I attempt to boot normally the windows boot manager comes up and says that windows cannot boot. I have two partitions on my computer and I made the one that I cannot boot into, so I could slowly migrate programs from my old partition to the new one, since I was having many issues with the old partition when Windows Update ran.
    When the Windows Boot Manager comes up, the only way I can get into either partition is to choose the F1 option and "choose another operating system", at which time I can only choose the old partition which is not the default partition.
    My hard drive is set as the default boot device in the bios.
    I have tried to install Windows 10 pro, to no avail, since it has to reboot many times and there is the issue of not being able to boot normally.
    I have tried all the other options offered by the Windows Boot manager, such as "repair startup errors, uninstall updates, choose restore points, command prompt commands such as check disk, repair mbr, rebuild bcd, etc.
    Any suggestions would be appreciated. Thanks!
      My Computer


  2. Posts : 38,342
    windows 10 professional version 1607 build 14393.969 64 bit
       #2

    Did you want to single or dual boot?
    Can you boot windows going though the additional steps?
    If not then comment for different commands.

    Run:

    Tuneup.bat - Click here to go to the BSOD batch repository to download and run this batch file.

    DiskParInfo.bat - Click here to go to the BSOD batch repository to download and run this batch file.



    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
    https://www.tenforums.com/tutorials/...creenshot.html


    Download and install Minitool Partition Wizard > click launch > post an image of the results into this thread
    MiniTool Partition Wizard Free Edition - Free download and software reviews - CNET Download
    MiniTool Portable Partition Magic Brings Easier Disk Management
      My Computer

  3. FreeBooter's Avatar
    Posts : 3,978
    Windows 10 Pro 64-bit
       #3

    Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

    Please type below commands into Command Prompt and press Enter key.

    Following commands will repair BCD Store.


    Code:
    Bootrec /scanos
    
    Bootrec  /RebuildBcd
      My Computer


  4. Posts : 77
    Windows 10
    Thread Starter
       #4

    zbook said:
    Did you want to single or dual boot?
    Can you boot windows going though the additional steps?
    If not then comment for different commands.

    Run:

    Tuneup.bat - Click here to go to the BSOD batch repository to download and run this batch file.

    DiskParInfo.bat - Click here to go to the BSOD batch repository to download and run this batch file.



    [FONT="]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[/FONT]
    https://www.tenforums.com/tutorials/...creenshot.html


    [FONT="]Download and install Minitool Partition Wizard > click launch > post an image of the results into this thread[/FONT]
    MiniTool Partition Wizard Free Edition - Free download and software reviews - CNET Download
    MiniTool Portable Partition Magic Brings Easier Disk Management
    Thanks Zbook. I intend to work through everything you sent me and get back to you later. I want to have a choice as to which of my two Windows installations to boot into. When I first set the computer up, I had this choice as I expected. I had a bit of difficulty getting things to work, so now when it won't boot I have to select F1 and I'm given a choice of the default boot which is called Windows 5 or Windows 3. Windows 5 will not boot, which is the defaut boot, and the partition that I want to boot into. I have to "choose another operating system" and boot into my old partition, Windows 3.

    - - - Updated - - -

    FreeBooter said:
    Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

    Please type below commands into Command Prompt and press Enter key.

    Following commands will repair BCD Store.


    Code:
    Bootrec /scanos
    
    Bootrec  /RebuildBcd
    Thanks freebooter. I have run the bootrec /rebuildbcd command and get the error message that it cannot be found and a string of text where it is at. I will try this again.

    - - - Updated - - -

    FreeBooter said:
    Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

    Please type below commands into Command Prompt and press Enter key.

    Following commands will repair BCD Store.


    Code:
    Bootrec /scanos
    
    Bootrec  /RebuildBcd
    FreeBooter
    I rebooted my computer and ran both these commands. Both commands ran successfully and returned the message:
    Total Identified Windows Installation = 0

    - - - Updated - - -

    zbook said:
    Did you want to single or dual boot?
    Can you boot windows going though the additional steps?
    If not then comment for different commands.

    Run:

    Tuneup.bat - Click here to go to the BSOD batch repository to download and run this batch file.

    DiskParInfo.bat - Click here to go to the BSOD batch repository to download and run this batch file.



    [FONT="]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[/FONT]
    https://www.tenforums.com/tutorials/...creenshot.html


    [FONT="]Download and install Minitool Partition Wizard > click launch > post an image of the results into this thread[/FONT]
    MiniTool Partition Wizard Free Edition - Free download and software reviews - CNET Download
    MiniTool Portable Partition Magic Brings Easier Disk Management
    Ok, no luck saving Disk Management to a file using windows Key, Shift, S in and I use it all the time, but it won't show in a text document. Looks like I finally got it using Windows Snip Tool

    - - - Updated - - -

    Ok, zbook thanks for the tuneup.bat post. I have downloaded it and intend to work through it to solve my issue. Above you can see that I posted my disk management screenshot. Thanks again
    Attached Thumbnails Attached Thumbnails Can't Boot Into default Windows Partition-diskmanagement.jpg  
    Last edited by Brentg; 3 Weeks Ago at 14:27.
      My Computer

  5. FreeBooter's Avatar
    Posts : 3,978
    Windows 10 Pro 64-bit
       #5

    Which partition is the second Windows OS installed on i only see one Boot partition.
      My Computer

  6. zebal's Avatar
    Posts : 902
    Windows 10 Pro x64 20H2 (Build: 19042.867)
       #6

    if data partitions are required, they should be placed after the Windows RE partition. This allows future updates to Windows RE to grow the Windows RE partition by shrinking the Windows partition.
    I don't know if this is the problem but you seem to have 2 RE partitions, which one should Windows use?
    Can you boot into RE? (blue screen Recovery Environment)

    Btw. you can't have 2 Windows OS'es on same drive I think. (unless I'm wrong ofc, never tried with GPT)
      My Computer

  7. NavyLCDR's Avatar
    Posts : 15,506
    Windows 10 Pro
       #7

    zebal said:
    I don't know if this is the problem but you seem to have 2 RE partitions, which one should Windows use?
    Can you boot into RE? (blue screen Recovery Environment)

    Btw. you can't have 2 Windows OS'es on same drive I think. (unless I'm wrong ofc, never tried with GPT)
    You can have multiple Windows OS'es on the same drive, regardless of whether it is MBR or GPT.
      My Computer

  8. NavyLCDR's Avatar
    Posts : 15,506
    Windows 10 Pro
       #8

    @Brentg,

    We need to start with seeing the output of:

    Code:
    diskpart
    select disk 0
    list part
      My Computer

  9. zebal's Avatar
    Posts : 902
    Windows 10 Pro x64 20H2 (Build: 19042.867)
       #9

    NavyLCDR said:
    You can have multiple Windows OS'es on the same drive, regardless of whether it is MBR or GPT.
    After which OS should be recovery partition put then? do you need 2 RE for each like in screenshot from OP?
      My Computer


  10. Posts : 38,342
    windows 10 professional version 1607 build 14393.969 64 bit
       #10

    When available please post results for tuneup and diskparinfo.

    Run: V2
    BSOD - Posting Instructions
      My Computer


 
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