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I reinstalled Precise, over the existing Oneiric install and assigned the partitions manually. I have 3 partitions dedicated to Ubuntu. The '/' partition I set to format. The '/boot' partition also I formatted. To retain the home partition with Precise, I assigned it as '/home'.

Two problems have surfaced - 1. The /home partition has been identified correctly by Precise, but none of my data was carried over, despite my not formatting the partition. 2. In my grub list on boot, an extra entry now occurs - Ubuntu 11.10 (11.10) on /dev/sda9

Could you tell me why this could have happened. And how to rectify it? I guess the data's gone, but how to resolve the partition still being linked with Oneiric.


Outputs for

  1. sudo blkid

    /dev/sda7: UUID="a9c7641a-7579-42a6-90c1-330cffc06e42" TYPE="ext2" 
    /dev/sda8: UUID="ef7ace89-9cfb-4ecc-8a86-654b3f926bbe" TYPE="swap" 
    /dev/sda9: UUID="8d8b94a9-5dd7-42f9-b91e-f4d4de3aa0c8" TYPE="ext4" 
    /dev/sda10: UUID="de2f4e35-3e40-495b-bff2-091308b08cb6" TYPE="ext4" 
  2. sudo cat /etc/fstab

    <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    nodev,noexec,nosuid 0       0
    / was on /dev/sda10 during installation
    UUID=de2f4e35-3e40-495b-bff2-091308b08cb6 /               ext4    errors=remount-ro 0       1
    /boot was on /dev/sda7 during installation
    UUID=a9c7641a-7579-42a6-90c1-330cffc06e42 /boot           ext2    defaults        0       2
    /home was on /dev/sda9 during installation
    UUID=8d8b94a9-5dd7-42f9-b91e-f4d4de3aa0c8 /home           ext4    defaults        0       2
    swap was on /dev/sda8 during installation
    UUID=ef7ace89-9cfb-4ecc-8a86-654b3f926bbe none            swap    sw              0       0
  3. sudo update-grub

    Found linux image: /boot/vmlinuz-3.2.0-24-generic-pae
    Found initrd image: /boot/initrd.img-3.2.0-24-generic-pae
    Found linux image: /boot/vmlinuz-3.2.0-23-generic-pae
    Found initrd image: /boot/initrd.img-3.2.0-23-generic-pae
    Found memtest86+ image: /memtest86+.bin
    Found Windows 7 (loader) on /dev/sda1
    Found Ubuntu 11.10 (11.10) on /dev/sda9
share|improve this question
Correct me if that's wrong, but upgrading usually doesn't involve manually assigning or formatting partitions. What you describe sounds a lot like a reinstall. – mikewhatever Apr 28 '12 at 3:39
@mikewhatever - Yes, it isn't the actual upgrade option. I meant that I just retained the home partition and yes, I reinstalled the OS. – ray89 Apr 28 '12 at 4:12
Right, thanks for clarifying. To use another partition as /home, you'll need to edit /etc/fstab, and redirect it to the appropriate partition. If you need help with that, please add the outputs of sudo blkid and cat /etc/fstab to the original question. – mikewhatever Apr 28 '12 at 5:33
@mikewhatever - Thanks for the help! I have added the outputs suggested by you in the question. I apologise for not phrasing my question properly. I have clarified it better now. I think Precise has identified the /home partition correctly, but none of my data from Oneiric has been carried over and in grub the partition is still shown as Ubuntu 11.10. – ray89 Apr 28 '12 at 11:47

According to your fstab, /dev/sda9 is the /home partition for the new installation. On the other hand, the Ubuntu 11.10 entry from the same partition suggests the presence of boot files there, which implies, the it has been a system (or a boot) partition before. I suspect that something like ls /home/ will reveal the old installation of 11.10 on /dev/sda9.

How that happened is not very clear. I can only guess that the / and /home partitions has been misidentified at the time of installation, the old / has been assigned to /home, and not formatted, whereas the old /home may have been assigned to /, and formatted. You might take a look at the old fstab on /dev/sda9, to gather more info.

share|improve this answer
Thanks for the help. I understood your explanation as to what might have happened. I think I will just remove the irrelevant entries from the grub menu list manually, as I am uncertain of any other method and do a fresh install when 12.10 comes around. – ray89 Apr 30 '12 at 4:58

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