I wish to configure a server with two SATA connected SSD disks in software RAID1.
I'm not sure how best to configure the disks for boot, particularly in UEFI boot mode, to ensure that /dev/sdb can be booted if (for example) /dev/sda fails. I have been configuring each disk as follows: Device Boot ... Size Id Type /dev/sdb1 * ... 476M ef EFI (FAT-12/16/32) /dev/sdb2 ... 119.2G 5 Extended /dev/sdb5 ... 953M fd Linux raid autodetect -> /md0 (/boot) /dev/sdb6 ... 1.9G fd Linux raid autodetect -> /md1 (swap) /dev/sdb7 ... 4.7G fd Linux raid autodetect -> /md2 (/tmp) /dev/sdb8 ... 111.8G fd Linux raid autodetect -> /md3 (/) I have the following questions: * is it advisable to have a separate EFI boot partition and separate /boot, or are they effectively the same thing? * is there any benefit at all to having UEFI booting on a pure Linux server? * is there a way to ensure that if there is a grub or kernel upgrade that grub-install will operate on both /dev/sda and /dev/sdb? Thanks for any advice or comments, Rory