UEFI / Legacy BIOS Mess and Windows Update

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  1. OldNavyGuy's Avatar
    Posts : 225
    Windows 10 Pro 1909
       #31

    Megahertz said:
    Tonkski, as you have a UEFI BIOS, why don't you make it UEFI- GPT instead of Legacy-MBR?
    @NavyLCDR suggested just that, and gave instructions on how to do it using Macrium.

    UEFI / Legacy BIOS Mess and Windows Update

    IMO, that is the best way forward for the OP.
      My Computer

  2. Megahertz's Avatar
    Posts : 1,264
    Windows 7 HP 64 - Windows 10 Pro - Lubuntu
       #32

    OldNavyGuy said:
    @NavyLCDR suggested just that, and gave instructions on how to do it using Macrium.

    UEFI / Legacy BIOS Mess and Windows Update

    IMO, that is the best way forward for the OP.
    And I suggested another way that can be much faster.
      My Computer


  3. Posts : 10
    Windows 10
    Thread Starter
       #33

    I'm planning on getting to a proper Legacy-MBR system first, as that seems quickest and lowest risk. Once I'm happy with that and I can get the Windows 10 updates again I'll back it all up and try migrating to UEFI. I'm comfortable using Macrium.
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  4. OldNavyGuy's Avatar
    Posts : 225
    Windows 10 Pro 1909
       #34

    Megahertz said:
    And I suggested another way that can be much faster.
    Faster doesn't always mean easier for the user.
      My Computer

  5. topgundcp's Avatar
    Posts : 2,618
    MintMate19x64 Win10Prox64
       #35

    @Tonkski
    Your PC is setup to boot using Legacy with Bitlocker enabled.
    The System Reserved partition is essential with BitLocker enabled, which can’t function otherwise (Info for bitlocker is also stored in it).
    If you re-format the reserved partition, info for bitlocker will be lost and you might not be able to access C drive)

    Just set your BIOS back to use Legacy to see if you can boot it.
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  6. Posts : 10
    Windows 10
    Thread Starter
       #36

    topgundcp said:
    @Tonkski
    Your PC is setup to boot using Legacy with Bitlocker enabled.
    The System Reserved partition is essential with BitLocker enabled, which can’t function otherwise (Info for bitlocker is also stored in it).
    If you re-format the reserved partition, info for bitlocker will be lost and you might not be able to access C drive)

    Just set your BIOS back to use Legacy to see if you can boot it.
    Thanks.
    So far I've cloned the laptop's SSD to a spare HDD using Macrium (I gather this disables Bitlocker in the clone). I plan to put the cloned HDD into my laptop and follow the instructions to get back to legacy boot - to see if it works. If that works I'll swap back and repeat with the SSD. What you're saying suggests that I'd need to do something about Bitlocker to be able to repeat the process successfully on the SSD?
    At the moment, with the original SSD still in the laptop and no changes made yet, when I change the boot option to Legacy I get an error about a missing file <Windows root>\system32\hal.dll.

    - - - Updated - - -
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  7. topgundcp's Avatar
    Posts : 2,618
    MintMate19x64 Win10Prox64
       #37

    I suggest that you turn off bitlocker using the procedure in this link:
    How to Disable Bitlocker in Windows Recovery Environment (WinRE). • Repair Windows™

    While in Windows Environment, try to copy from x:\windows\system32\hall.dll to c:\windows\system32\hall.dll

    Bootup Macrium Rescue disk then select "Fix Windows Boot Problems" to rebuild BCD
      My Computer


 

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