Upgrading from Legacy to UEFI on AsRock H310CM-HDV
Upgrading from Legacy to UEFI on AsRock H310CM-HDV
Hello everyone, I'm attempting to transition from Legacy to UEFI on my AsRock H310CM-HDV running UEFI version 4.20. What I've noticed is that there isn't a straightforward switch between BIOS and UEFI settings—most of the options revolve around the CSM configuration. My main concerns are: When I disable the CSM, will my system remain in UEFI mode? And if I do, should I change my primary hard drive from MBR to GPT format? I've heard that MBR isn't compatible with UEFI systems. Thanks ahead!
Can't discuss CSM much, but you likely need to switch your hard drive partition table from MBR to GPT. There are tools like AOMEI Partition Manager and Ease US Partition Manager that can assist in conversion without losing data. Otherwise, changing the format will erase everything on the disk.
Really frustrating working on MBR boot issues versus GPT/UEFI fixes.
Display disk management options. The image indicates UEFI is active; legacy boot supports network boot only.
Attached you'll see the system details along with the disk volume specifications. It's formatted neatly, though remember Hérité stands for Legacy and the main startup sector is the MBR.
It seems the system reserved partition is on the incorrect drive, so it should be transferred to the boot drive. Have you made a solid backup first? Then use mbr2gpt or a tool like gparted to relocate that partition. Alternatively, you could reinstall Windows. Why are you opting for EFI boot when legacy boot works just fine?
Choose UEFI for faster startup, improved compatibility, secure boot, and support for Windows 11. Reinstalling Windows might simplify the process.