Contents
Does UEFI support RAID?
Creation of a RAID Array in the UEFI BIOS. You can also create RAID volumes in the UEFI RAID BIOS that you access from the F12 Device configuration menu (See Figure 1 above.) Once you select Device Configuration and press the “Enter” key, you will be presented with the RAID status page.
Does RAID use MBR or GPT?
No. They are mutually exclusive. Only and Itanium version of Windows can boot GPT. So if you want to have a boot volume with 3 750s in raid 0, you’re going to have to use MBR.
Why do I need UEFI booting and RAID1?
Create higher-level knowledge of the root-filesystem RAID configuration is needed to keep a collection of filesystems manually synchronized instead of doing block-level RAID. (Seems like a lot of work and would need redesign of /boot/efi into something like /boot/efi/booted, /boot/efi/spare1, /boot/efi/spare2, etc)
Why is my BIOS unable to access UEFI settings?
So you are unable to see UEFI firmware settings. And if you want to make your computer support UEFI firmware, you need to change a new motherboard which supports UEFI. If the BIOS mode is UEFI but you are unable to access UEFI firmware setting, you can try the following fixes to get rid of the issue.
Where does UEFI boot from in grub install?
UEFI should be able to boot whatever disk hasn’t failed, and grub-install will write to the RAID mounted at /boot/efi. However, we’re left with a new problem: on (at least) Debian and Ubuntu, grub-install attempts to run efibootmgr to record which disk UEFI should boot from.
What happens if UEFI writes to one of the drives?
HOWEVER there is one nasty risk with this setup: if UEFI writes anything to one of the drives (which this firmware did when it wrote out a “boot variable cache” file), it may lead to corrupted results once Linux mounts the RAID (since the member drives won’t have identical block-level copies of the FAT32 any more).