Hi all,Trying this again. I have a server with / (including /boot) on a md, RAID1 device. Or so I thought. After updating installing latest 7.4 kernel and rebooting I noticed it was running an older kernel. Output from update-grub suggested that two unused spares somehow had older versions of the / partition. I added them back as hot spares and then made them mirrors of the current / partition (which should have the updated kernel on it), but the error messages I have got from update-grub since have gone from disturbing to just plain weird. Have a look at the attachment.I am guessing GRUB is working off an old map of partitions, but don't understand enough of how it works to get any further than that. Any advice or pointers to decent documentation appreciated!