hi Phillip, This machine (the intel chipset one) has 2 discs in raid1, so a mirrored set. From Lucid to Maverick was an inplace upgrade through upgrade manager. That left the machine non bootable so I put a USB stick in and booted Natty server (32-bits). Installed Natty from the stick but without formatting existing partitions. Same result: not booting, so again booting from USB, rescue a broken system, drop into a root shell, grub-install on /dev/mapper/isw_cfaeccihhh_RAID_MIKE. That fixed the booting side of things.
I would expect Grub to know and use (or offer the option to use) the manually installed location because such a deviation would be done to correct a problem such as mine. It would likely be the last known working configuration, and resetting to a previous location should not be done without at least asking me. As I understand you this would mean that a defect in the automatic installation long time ago would still be coming back on every upgrade / re-install? The moaning and groaning during boot used not to be too serious, depending on what device couldn't be found. If /home, swap or DATA yes, then it would pull through and boot. If / then no joy, busybox and reboot, try again. So I guess yes it is relevant, or at least a symptom. I'll see what information I can get for you later this week (any specific logs you would like to see?) If I find time next weekend I'll do a full install, formatting the fs and all, of both Maverick and Natty, see what happens and report back. cheers Tom PS: The other machine, which is the one that I started this bug report with, has a Promise Fasttrak chipset, 2 discs in a striped set ,raid0, Maverick 32bits. It's been non-usable since jan18th, but I can get it into a running state, so if you want logs or other info on that one, plz ask. If need be I can do a full re-install on this machine as well, since I do have /home and DATA on separate partitions. Thing is that on Maverick Gparted is still 0.6x and the problem with dmraid was fixed in Gparted 0.7 so formatting the partitions won't work and needs to be done from a separate session booting off either a Gparted or a Natty CD. I realise it's a bit messy to report on 2 separate machines in one thread, but they share the same behaviour and they are both running dmraid. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/631795 Title: [LUCID, MAVERICK, NATTY] do not boot reliably on dmraid set -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs