View Full Version : [ubuntu] [SOLVED] Swap partition error after upgrading to 10.04

July 5th, 2010, 05:48 PM
One problem that had persisted since my upgrade to 10.04 was that the swap partition was not automatically mounted on boot-up, so I had to do that manually by typing sudo swapon -a /dev/sda1 in the terminal. Later on, hubby added a swapon command to /etc/rc.local, but that was actually more of a workaround than an actual solution.

Here's what hubby has figured out: the cause of this issue is that /dev/sda1 is an old swap partition that was formatted a few years ago and (apparently) does not contain a UUID in the superblock which Ubuntu 10.04 now requires in /etc/fstab. No listing of a UUID link to /dev/sda1 (ls -l /dev/disk/by-uuid) and trying to use sudo tune2fs -U random /dev/sda1 indicated a UUID could not just be added.

So under System, Administration used Disk Utility to reformat /dev/sda1 and now (tada!) there's a symlink to /dev/sda1 in /dev/deisk/by-uuid. Copied the symlink name into the entry for /dev/sda1 in /etc/fstab (sudo gedit /etc/fstab) and after a cold reboot swap was automatically used.