Andrei
command the right command?
No. You always should change bootloader using YaST bootloader module. This ensures that configuration is correctly updated and the right bootloader will be reconfigured when you add/remove kernels.
I'll use the UI but I'd like to also understand what the UI's doing. Is there a guide to the equivalent manual steps that using the UI represents?
Since I have '/boot' partition on a 4-disk RAID-1 array, what's the right way to install grub2 as the bootloader default on that array?
You should install GRUB2 in MBR of each disk if you want full redundancy.
Just to be clear, that means which of the two boxes in the UI [ ] Boot from Master Record [ ] Write Generic Boot Code to MBR ?
Do I execute grub2-install 4 times, once for each drive?
grub2-install /dev/sda grub2-install /dev/sdb grub2-install /dev/sdc grub2-install /dev/sdd
Yes, at this time this means running grub-install 4 times.
Unfortunately I am not sure whether YaST actually supports this configuration. It does support 2-way mirror (i.e. RAID1 consisting of two drives). In this case you should see checkbox "Enable MD redundancy" or similar' checking it (it is not default) will cause YaST to automatically configure bootloader location in MBR of each drive.
In that same Yast2 module? In the BootLoader module I don't find any redundancy-related checkbox. But at the Yast2 BootLoader module's Boot Loader Settings > Boot Code Options > Boot Loader Installation Details I do get a dialog that lists four drives by-id Disk Order Disks /dev/disk/by-id/ata-ST31000528AS_AAAAAAAAA@ /dev/disk/by-id/ata-ST31000528AS_BBBBBBBB@ /dev/disk/by-id/ata-ST31000528AS_CCCCCCCC@ /dev/disk/by-id/ata-ST31000528AS_DDDDDDDD@ Checking with readlink I verify that those correspond in order to /dev/sda /dev/sdc /dev/sdb /dev/sdd The "Help" there says Disks Order To specify the order of the disks according to the order in BIOS, use the Up and Down buttons to reorder the disks. To add a disk, push Add. To remove a disk, push Remove. doesn't specify that all four of those drive will get written with Grub2 info. And more specifically if the right boxes are checked that all 4 MBRs will get written. How can I verify that all four drives get the data? - Garrett -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org