10-19-2023, 07:52 AM
Do you mean you get this error in Windows Setup?
The usual reason is that you have booted in UEFI mode (Ventoy will say EFI if you booted in UEFI mode or BIOS if you booted in legacy MBR BIOS mode).
So if you boot to Windows Setup in UEFI mode the disk that you install to (or internal boot disk) must be partitioned as a GPT disk (internal HDD/SSD = GPT).
If you booted to Windows Setup in legacy BIOS mode then the target disk (or internal boot disk) must be partitioned as MBR/legacy.
If those two things do not match then either reboot in the other mode (e.g. press F8, F11, F12 and select USB boot in other mode) or CLEAN the disk by deleting all partitions and allow Windows Setup to make new partitions.
The usual reason is that you have booted in UEFI mode (Ventoy will say EFI if you booted in UEFI mode or BIOS if you booted in legacy MBR BIOS mode).
So if you boot to Windows Setup in UEFI mode the disk that you install to (or internal boot disk) must be partitioned as a GPT disk (internal HDD/SSD = GPT).
If you booted to Windows Setup in legacy BIOS mode then the target disk (or internal boot disk) must be partitioned as MBR/legacy.
If those two things do not match then either reboot in the other mode (e.g. press F8, F11, F12 and select USB boot in other mode) or CLEAN the disk by deleting all partitions and allow Windows Setup to make new partitions.