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Wokhiosk's avatar
Wokhiosk
Iron Contributor
Oct 28, 2025

How to change a disk GUID on Windows 11?

I went through the process of expanding the EFI partition on my system. However it appears that the new EFI partition got its own GUID. Is there way to assign it back to what everything else on the drive is assigned?

deployment
security

2 Replies

  • Felixsyu's avatar
    Felixsyu
    Iron Contributor
    Nov 03, 2025

    Yes, it is possible to assign the new EFI partition's GUID back to the original or desired value, but you need to be cautious. The EFI System Partition (ESP) typically has a specific GUID (Partition ID) that Windows and UEFI firmware recognize, and changing it can sometimes cause boot issues if not done carefully.

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