I've checked the GRUB to-do list and RAID and LVM still are listed there. Please, could you confirm that this is still happening with latest Dapper updates? Tried on Edgy, maybe?
** Changed in: preseed (Ubuntu) Assignee: (unassigned) => Alex Muntada Status: Confirmed => Needs Info -- installer allows /boot to be on a raid or LV volume, which grub doesn't support https://launchpad.net/bugs/31435 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs