On Tue, 22 Nov 2011 22:23:00 +0000 Gavin Whitehead <gavin@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > I'm not sure if this is a GRUB2 problem or a RAID/MD issue but here goes... > > I want to set up a machine that will boot two Linux installations using > raid 1 partitions and Windows XP on a single partition. > > I have two identical disks partitioned as follows > > $ cat /proc/partitions > major minor #blocks name > > 8 0 244198584 sda > 8 1 30720000 sda1 > 8 2 30720000 sda2 > 8 3 40960000 sda3 > 8 4 1 sda4 > 8 5 4194304 sda5 > 8 6 137601024 sda6 > 8 16 244198584 sdb > 8 17 30720000 sdb1 > 8 18 30720000 sdb2 > 8 19 40960000 sdb3 > 8 20 1 sdb4 > 8 21 4194304 sdb5 > 8 22 137601024 sdb6 > > I installed WinXP first in sda3. > > I then installed Ubuntu 11.04 from the Alternate CD and created some > raid1 devices > md0 sda1 sdb1 / > md1 sda5 sdb5 swap > md2 sda6 sdb6 /home > > I set the boot flag on sda1 and sdb1. > This worked a treat. I could boot in to either Ubuntu 11.04 to WinXP. > I tested the RAID1 (power down, unplug a disk, power up, power down, > replug the disk, power up, use 'mdadm --add' to rebuild the array). > Brilliant. > > Then I installed Xubuntu 11.10 from the Alternate CD. For this install > I created one new raid1 device (md3) and reused md1 and md2 > md3 sda2 sdb2 / > md1 sda5 sdb5 swap > md2 sda6 sdb6 /home > > I set the boot flag on sda2 and sdb2. > > After the install had completed and grub2 had built the grub.cfg I only > had my new Xubuntu 11.10 in the boot menu. The Xubuntu 11.10 install > works perfectly (and I can boot in to Win XP) but I can't boot in to the > Ubuntu 11.04 installation. I've re-run 'update-grub' but it doesn't > find the other installation. > > If I run 'sudo mount /dev/md0 /mnt' I can access the Ubuntu 11.04 files. > > Is my intended configuration (tri-boot with two raid1, partition based, > Linux installations and XP on a single parition) unachievable? > I would just dive into grub.cfg with an editor and make it work. These wonderful "automatically make a config file for you tools" certainly have a place, but there is a reason that config files are plain text files and that reason is emacs (or possible vim). NeilBrown
Attachment:
signature.asc
Description: PGP signature
