Comment 2 for bug 603854

I had this bug today when trying to install 10.10 Maverick Beta from a alternative daily CD (iso-image from 05 sept 2010). At the end of the install procedure grub was installed on /dev/sda which i *did not* ask for.
See also LP 420992.

Luckily, earlier I had found and used the workaround as described in 420992 #11 so grub was already on the array's mbr.
Rebooted into recovery mode and got myself a root session on the right partition (pdc_jcchiiaab5), mounted /home partition and then ran update-grub. Saw a lot of error messages about memory leaks, but it found my OS'es.

Ubuntu will not boot though because of issues with device names not handled right between kernel, grub and dmraid. Bummer.
This means I can now boot into XP (alas... but that does work with dmraid) but not into Maverick.

cheers
Tom