Morning all, Not related to proxmox per se, but I had a dns issue this morning and found that I had an old proxmox machine that I forgot that I had, with (of course) important DNS servers on it.. apt-get all went well.. but in my usual paranoia did a dmesg and check the /var/log/messages before rebooting (remotely) and I found that......Descriptor sense data with sense descriptors (in hex): 72 0b 14 00 00 00 00 0c 00 0a 80 00 00 00 00 00 00 04 97 basd 0:0:0:0: [sda] Add. Sense: Recorded entity not foundsd 0:0:0:0: [sda] CDB: Write(10): 2a 00 00 04 97 ba 00 00 b0 00ata1: EH completeRAID1 conf printout: --- wd:1 rd:2 disk 0, wo:1, o:0, dev:sda1 disk 1, wo:0, o:1, dev:sdb1RAID1 conf printout: --- wd:1 rd:2 disk 1, wo:0, o:1, dev:sdb1...cat /proc/mdstatPersonalities : [raid1]md1 : active raid1 sda2[2](F) sdb2[1] 243672952 blocks super 1.2 [2/1] [_U]md0 : active raid1 sda1[2](F) sdb1[1] 523252 blocks super 1.2 [2/1] [_U](love the F..)So what is the linux command to check that it will boot from sdb.. I agree that grub-install /dev/sda && echo $? && grub-install /dev/sdb && echo $? && update-grub && echo $? should all work.. but how do I *check* that it will actually boot.. (is there a way?)Other than physically testing..Thanks in advance.(formatting is not sticking I am sorry for the air being removed from the post..)