I have:
sda
and sdb
which partitions is forming mirror RAID
md0
md1
md2
md3
During update process, I was prompted where to install GRUB boot loader - on sda, sdb, md's or all together?
What choice is correct?
Recommended way would be to install grub to a master boot record on each hard drive, that is sda
and sdb
.
That way if one hard drive fails you will be able to boot from another one.
Depending on your setup sometimes you may need to install grub to a specific partition rather than a master boot record. For example if you have another boot loader sitting on the master boot record and want to install grub to a partition then choose one of the md
devices.
Similarly on EFI systems you should install grub to EFI system partition on both hard drives.
/etc/default/grub
with new one, when I got message: "The Grub boot loader was previously installed to a disk that is no longer present or whose normally unique indentifier was changed for some reason..." and options to select (sda,sdb,md's). If that's telling something to you, any help would be life-saving to me.
Jul 23, 2014 at 15:03