Hi, all -- I have a system with a 128G SSD /dev/sda that is my boot, swap, and data drive. It is sliced into partitions with a GPT layout and it has been working fabulously for over a year. My long-term plans are to add a 256G SSD, set up either the disk or the slices as [a] mirror[s], migrate from small to large, and then replace the small with another large that gets added to the mirror[s]. I've had /dev/sde in place for a while across a couple of reboots and have been waiting for the right time to copy the XFS content across. I also have a RAID-0 stripe of RAID-5 slices across 10T disks, and the other day I bought another to add to grow the slices. I shut down, installed it, and thought to myself it would be a great time to do the xfs dump->restore thing to get ready to swing. Should be simple, right? Somehow I have tanked grub2. If the box gets anywhere at all, it only gets as far as "GRUB2 loading" (or whatever it says; I can't access remotely when it's dead and so I can't mouse the message) and then hangs. Mostly it doesn't even get that far. I have unplugged everything except the RAID-5 big disks, even going so far as to rip out the new 256G, to no avail. I can boot into a Leap 15.2 rescue system on a thumb drive and even mount /dev/sda2 manually, but when I then try to reinstall grub2 it complains that it can't work on a GPT system. But it was working before! Exactly once I was able to use the boot menu in my BIOS to tell it to boot from SATA0 (aka /dev/sda), although it threw another error much further down the line and wanted a root password for a shell. I've never had a separate /boot or /efi partition and I've switched over to GPT long ago; this system was built with GPT tables. But it somehow used to boot ... How do I repair grub2 to get back to booting on sda first, just so that we can be back where we were and I can start adding the slices? I'll tackle migration from sda (raw) to sde (mirrors) once it's up and running again; for now I just want to get back to where I was. TIA & HAND :-D -- David T-G See http://justpickone.org/davidtg/email/ See http://justpickone.org/davidtg/tofu.txt