Requirement I have a computer which runs Ubuntu 10.4.3 (64 bit server) installed over LVM and /boot filesystem and I wanted it to dual boot to Ubuntu 12.04 (desktop, 32 bit).
Creating a free partition to installed desktop version- Followed procedures/discussions in this question and freed up 200 GB out of 200GB hard disk. This was successful.
Installing Ubuntu 12.04.1 desktop version (32 bit) - Successfully installed OS iun to newly created free space as /dev/sda6 (extended)
During install, Desktop version failed to see Ubuntu Server's presence and asked me if I want to use who system. I used manual install to over come install correctly.
Grub did not detect my Ubuntu Server install and set it up directly to boot to Ubuntu 12.04.
What I tried to fix this:
I used Grub2 recovery procedures described in this question using Ubuntu 12.04.2 64 bit server CD and could get only server install back. Grub did not detect my desktop version in a different partition.
I used the same procedures with Desktop CD and then Grub only detected and installed my desktop version, did not detect my server version.
- Downloaded rescatux CD and tried to
'Update GRUB configuration'and '
Restore Grub'. Update Grub configuration failed when I chose the LVM and succeeded when I chose sda6 (non-lvm ubuntu 12.04) and restore grub forced me to choose one partition and depending upon the partition I choose, I could boot only that version linux. Question How to get this to boot as dual boot option ?