I am trying to enable disk encryption using TPM/PTT. I get an error message that the system can only enable TPM in UEFI.
When I go into the BIOS, UEFI says "no boot Disk", Legacy reports my SATA SSD. If I disable the legacy boot, it fails to boot. If I enable both, it ends up in legacy.
BTW, I have not opened the NUC, but I think it is an M.2, but the M.2 setting in the bios has not identified the disk.
If OS is Windows 10, there’s a way to convert the system from legacy/MBR disk structure to UEFI/GPT, using the Microsoft MBR2GPT utility, without needing to re-install Windows:
Thanks for the correction! I was thinking UEFI but typed legacy!
I second the recommendation to do a backup before the conversion. It's always better to be safe than sorry!