Convert Windows 10 from Legacy BIOS to UEFI without Data Loss  

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  1. Posts : 61,457
    64-bit Windows 11 Pro for Workstations
    Thread Starter
       #80

    I'm glad it could help Burgurne. :)
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  2. Posts : 6
    Windows 10
       #81

    Brink said:
    I'm glad it could help Burgurne. :)
    Hello, I was successfully able to convert to UEFI using this tutorial. I checked my partitions and noticed that a new partition (EFI System Partition) was added. Is it safe to delete this to get more memory or should I leave it as is?

    Convert Windows 10 from Legacy BIOS to UEFI without Data Loss-part.png
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  3. Posts : 61,457
    64-bit Windows 11 Pro for Workstations
    Thread Starter
       #82

    Hello dowon, :)

    The EFI partition is normal. You do not want to delete it since it is required to boot a UEFI Windows installation.

    I'm glad it went smoothly for you.
      My Computers


  4. Posts : 17,246
    Windows 11 Pro
       #83

    dowon said:
    Hello, I was successfully able to convert to UEFI using this tutorial. I checked my partitions and noticed that a new partition (EFI System Partition) was added. Is it safe to delete this to get more memory or should I leave it as is?
    The EFI System Partition is now what the computer is booting from. Delete it and the computer will not boot.
      My Computer


  5. Posts : 31
    Windows 10 64bit
       #84

    Ok the conversion went well. Although it messed up System restore, there was a C drive (missing) in the available drives which had to be deleted.
    Also it has assigned a drive letter E to the System reserved partition when it did not have one before.
    Convert Windows 10 from Legacy BIOS to UEFI without Data Loss-capture.png

    Should the drive letter be removed?
      My Computer


  6. Posts : 61,457
    64-bit Windows 11 Pro for Workstations
    Thread Starter
       #85

    Hello Kpat62, :)

    Yes, you can remove the drive letter for "E". It normally wouldn't have one.
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  7. Posts : 31
    Windows 10 64bit
       #86

    Thank you Brink
    I set the label to none. All is well.
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  8. Posts : 61,457
    64-bit Windows 11 Pro for Workstations
    Thread Starter
       #87

      My Computers


  9. Posts : 88
    Windows 10 21H2
       #88

    I have a triple-boot system: Windows 7 + Windows 10 + Linux Mint.
    I have backed up everything, so can I use that method with accepting that things can go wrong?
      My Computer


  10. Posts : 61,457
    64-bit Windows 11 Pro for Workstations
    Thread Starter
       #89

    Hello ntd252,

    I wouldn't recommend doing this when you have a multiboot system like that. It will most likely break it.
      My Computers


 

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