I’m not sure if this should really be in the beta forum. But I’ll start here.
I have 11.4 running on my laptop.
I later installed the live gnome 3 CD, installing into a separate partition (sda10). The install overwrote the boot sector for the extended partition (sda4), but booted gnome 3 nicely. This was expected.
I restored the prior contents of sda4, so that I could get into my original 11.4 install. That worked too.
I next added grub entry so that I could do a secondary boot into gnome 3.
title gnome3 root (hd0,9) configfile /boot/grub/menu.lst
That, too, worked as expected. If I selected “gnome 3” from the main grub menu, the secondary grub menu was shown and I could use that to boot into gnome 3.
That’s all background.
I later installed 12.1 M2 into the sda10 partition, overwriting the gnome 3 install. I told the installer to install grub in the root partition (instead the extended partition).
Now, when I boot, if I select gnome 3 from the main boot menu, it takes me into M2 (actually M3 now - I just updated).
That’s all fine. But here’s the problem:
Selecting gnome 3 does not display the secondary grub menu. It just boots me into the first item on the menu (even when the third item is listed as the boot default). So I don’t get a chance to select between default and desktop kernels, or standard or failsafe boots with the use of the secondary grub.
What went wrong? How do I fix it? Or is this a 12.1 bug?