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I recently installed Ubuntu 8.04, before that I had 11.10. My intend was to use both of them.

After installation of 8.04, an item for 11.10 didn't appear in grub. What can I do to get it back?

PS: 11.10 using ext4, 8.04 using ext3, so I can't do mount operations.

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up vote 2 down vote accepted

If I remember correctly, Ubuntu 8.04 used grub 1, and ext4 was not supported yet, so it is most probably a grub problem.

The solution is to start with a 11.10 livecd and restore grub 2 using the usual procedures, see for example Recovering Ubuntu After Installing Windows (I know, you don't installed Windows, but the procedure is the same).

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thanks, I'll try this as soon as I get a 11.10 livecd. – emrah Dec 25 '11 at 16:00

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