Drive partition change destroyed Windows (dualboot)

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  1. Posts : 9
    windows 10
       #1

    Drive partition change destroyed Windows (dualboot)


    Hello,

    I'm running windows10 in dual boot with Ubuntu 20.04 and they were running off the same ssd. A couple days ago I moved the Ubuntu partition to a new SSD and all was running well, I could boot into both without problem.
    Today I deleted the ubuntu partition from the old ssd (the drive that still contains Windows) using gparted in linux, with the plan of expanding the windows partition. I was warned that expanding the windows partition forward would cause problems, so I decided to boot into Windows and figure it out from there.

    However, I can't boot into Windows anymore. I get a bsod INACCESSIBLE_BOOT_DEVICE

    Every other try I get the auto repair, where start-up repair tries for a couple seconds and gives me Start-up repair couldn't repair your pc

    uninstall updates doesn't work, system restore doesn't work,

    using the cmd prompt and trying bootrec /scanos says there are no identified Windows installations.

    In linux I can mount the drive and access all the files and everything looks normal at first glance, so it's definitely not a hardware problem.



    so in summary:
    -have deleted the partition in front of the windows partition
    -have not touched the windows partition
    -windows is visible in grub bootloader, boots into auto-repair and nothing works from there

    I'm out of ideas, so any help is appreciated.

    If this is the wrong subforum feel free to move the post
      My Computer


  2. Posts : 8,092
    windows 10
       #2

    Welcome to the forum. Its likley the parition you deleted was were windows was booting from. Two options get free parition recovery software and try and recover the parition
    MR has a great fixer for this problem Fixing Windows boot problems using Macrium rescue media - YouTube
      My Computer


  3. Posts : 4,539
    several
       #3

    I can't boot into Windows anymore. I get a bsod INACCESSIBLE_BOOT_DEVICE
    Every other try I get the auto repair, where start-up repair tries for a couple seconds and gives me Start-up repair couldn't repair your pc
    is that windows startup repair ?
      My Computer


  4. Posts : 9
    windows 10
    Thread Starter
       #4

    Samuria said:
    Welcome to the forum. Its likley the parition you deleted was were windows was booting from. Two options get free parition recovery software and try and recover the parition
    MR has a great fixer for this problem Fixing Windows boot problems using Macrium rescue media - YouTube
    I have cloned that partition to the new ssd. Would it work to just put a copy back on the old ssd where I deleted it, with just the uuid changed? Or alternatively, could I tell windows to boot from the new ssd instead of the old one?

    SIW2 said:
    is that windows startup repair ?
    Yes it is.
      My Computer


  5. Posts : 9,777
    Mac OS Catalina
       #5

    No it will not work, you need to either fix by pulling a backup to put everything back in its place or follow the instructions that Samuria posted.
      My Computer


  6. Posts : 9
    windows 10
    Thread Starter
       #6

    I tried the restoring partition but it didn't work. When at first the partition refused to boot I assumed the empty space in front of it was the problem and I created a new partition to fill it, I guess that messed things up.

    So I got the Macrium Reflect, created the bootable USBdrive, have the exact same screens and dialogues as in the youtube video, seems to finish things and offer to restart but when I restart I'm back to the same BSOD / recovery menu where all the options fail.

    Still 0 identified Windows installations from bootrec /scanos
      My Computer


  7. Posts : 8,092
    windows 10
       #7

    Resetting the pc may be best option and you loose no data How to reset Windows 10 if it's not starting up - YouTube
      My Computer


  8. Posts : 9
    windows 10
    Thread Starter
       #8

    I can pull the data off using Ubuntu, that part is not the problem.
    But it will take me a lot of time installing the programs and configurations again, so I'm hoping a clean install won't be necessary
      My Computer


  9. Posts : 8,092
    windows 10
       #9

    The reset you loose nothing all programs and data is still there
      My Computer


  10. Posts : 6,282
    Windows 11 Pro - Windows 7 HP - Lubuntu
       #10

    A dual boot on a Legacy - MBR is different from a boot on a UEFI - GPT drive. Is your SSD drive a Legacy - MBR or UEFI - GPT?

    On a Legacy - MBR the main boot manager is Grub. Once you deleted the Ubuntu partition you also deleted Grub.

    With Macrium you can copy the Ubuntu partition from the second SSD to the first one (that has Windows)
    or
    You can rebuild the boot manager on the windows partition.
    What you want to do?

    Boot from a Win 10 installation drive.
    At the Windows Setup screen, press Shift+F10 simultaneously to open a command line prompt and type:
    Diskpart
    List disk (on the last column (GPT) see if there is an * for the drive.)
    exit
    Report

    Drive partition change destroyed Windows (dualboot)-image.png
      My Computers


 

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