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Hello,
I am trying to solve the issue of switching from legacy to UEFI in order to be able to migrate to Windows 11. When trying to switch between them, when I choose UEFI I no longer see my disk listed in the boot sequence priority dropdown as I do for legacy. I know that switching from legacy to UEFI loses the boot sequence priority so I wanted to choose them manually but I do not have the disk listed on the dropdown menu as I did before (I only see the generic descriptive Hard Disk instead of the disk's denomination).
Do I have to first convert my disk from an MBR to a GPT partitioning system (like it's explained here) for it to appear there correctly? I've already checked and validated through the mbr2gpt.exe tool using /validate, and the validation is successful, but before I do the convert I just want to make sure that this is the issue, basically.
Thanks!
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Answer accepted by question author
Hi, I am Dave, I will help you with this.
That is correct, to switch your system from Legacy BIOS mode to UEFI mode, the drive must be converted to a GPT partition style, an MBR drive cannot be used in UEFI mode, before you convert the drive backup your files first in case the conversion goes wrong.
Hi Dave, thanks so much.
Will backup now and try & see. Have a great day!
