I am experiencing what is likely the same thing with 11.04 (Natty Narwhal) i386 (2.6.38-8-generic), having installed Ubuntu on one particular PC for the first time.
PC has two hard discs: boot disc is IDE and a second hard disc is SATA. The SATA was in "RAID" mode, in the BIOS, (though not using as RAID 0, RAID 1, etc,) but I switched it to IDE without seeing any improvement in respect of this issue. Comments in fstab suggest the installation program, running from CD, saw my IDE disc as sdb. When I boot, the IDE disc, which holds Ubuntu, is sometimes sda and sometimes sdb. As I chose to use a separate partition for /home, it's a massive pain when wrong - desktop can't load! (Best I can do is Ctrl- Alt-T, to get a terminal, gksudo gedit /etc/fstab, and sudo reboot.) About to look up how to use UUIDs. (Other symptom is my swap partitions going to the wrong discs. Sometimes gnome-system-monitor shows I've 40GiB of swap! Fortunately, I've nothing important on the second disc, at present.) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/261178 Title: [intrepid] Random order of disk detection To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/261178/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs