On Thu, 3 Sep 2015, gregrwm wrote: > you want to upgrade. seems to me the easiest, quickest, and most > trustworthy way to proceed is reinstall. That makes sense. I have to make sure I get the instructions right this time. I seem to have missed a step last time. > and while you're at it setup your discs so you have 2 complete and > distinct installations simultaneously. that way the next time around > you can install the next before/without overwriting what's working. I have no idea how to do that. > i have 2 discs and build raid1 sets by setting the 2 discs up with > identical partitions, on each disc i put two 300mb boot partitions, two > 10gig swap partitions, and the rest of the space equally divided between > two lvm partitions. I wouldn't know how to do that, either. Suppose I have two 3 TB disks, sda and sdb and I just want RAID1 with 300 MB /boot, 32 GB swap and the rest in /. How do I do it? I posted very detailed instructions explaining exactly how I did it several years ago, but now I know that those instructions were flawed. Can you figure out what I did wrong here?: http://shadowknight.real-time.com/pipermail/tclug-list/2012-May/062090.html This part seems especially suspicious: "Note that I did not add /boot to the RAID -- that will cause Ubuntu to fail to load GRUB, so don't do that." Maybe /boot has to be added afterward? Or maybe that's just wrong. I'm sure I read it somewhere. What seems to have happened is that Ubuntu made a /boot directory in the / partition of the RAID, but that did not work. Mike