Re: grub2 can't find kernel with dual boot

[Isaac Dupree]

hmm... and clearly it can read the ext2 filesystems, since it's reading 
grub.cfg and your Jaunty linux/initrd...

Foxy wrote:
> No, both vmlinuz and initrd are on /dev/sda7 in the boot partition...
>
>
> Isaac Dupree wrote:
> > Michael Evans wrote:
> > > I am purely guessing here, but grub2 may use the same notation as grub.
> > >
> > > sda7 would be hd(0,6)
> > > sda8 would be hd(0,7)
> >
> > no, GRUB 2 uses linux-like numbering.
> >
> > > In this context, the 'root' would probably be the same as in grub, it
> > > specifies the root device for -grub-'s data (usually /boot).
> >
> > What it specifies is where the paths are interpreted from.  It's the 
> > equivalent of saying
> >
> > menuentry "Ubuntu karmic (development branch), kernel 2.6.31-2-generic 
> > (on /dev/sda6)" {
> >      linux (hd0,7)/boot/vmlinuz-2.6.31-2-generic 
> > root=UUID=6ad1f928-50b9-4aea-9495-95df46d08d58 ro quiet splash
> >      initrd (hd0,7)/boot/initrd.img-2.6.31-2-generic
> >  }
> >
> > Are your vmlinuz and initrd in fact on that partition and with those 
> > exact names (not, say, with any of the version numbers increased, or, 
> > on /dev/sda6...)
> >
> > -Isaac
> >
> > > On Wed, Aug 12, 2009 at 2:57 PM, Foxy <address@hidden> wrote:
> > >
> > > >  I have Ubuntu 9.04 Jaunty as my main OS, where I have upgraded GRUB to
> > > > GRUB2. I have also installed Ubuntu 9.10 Karmic on separate 
> > > > partitions. I am
> > > > trying to boot Kramic, I have a message that I need to load kernel 
> > > > first. It
> > > > looks like GRUB2 cannot find kernel. Probably the problem is that I 
> > > > have
> > > > /boot on a separate partition.
> > > >
> > > > This is my config:
> > > >
> > > > /boot/grub/grub.cfg (Karmic entry):
> > > >
> > > > menuentry "Ubuntu karmic (development branch), kernel 
> > > > 2.6.31-2-generic (on
> > > > /dev/sda6)" {
> > > >     set root=(hd0,7)
> > > >     linux /boot/vmlinuz-2.6.31-2-generic
> > > > root=UUID=6ad1f928-50b9-4aea-9495-95df46d08d58 ro quiet splash
> > > >     initrd /boot/initrd.img-2.6.31-2-generic
> > > > }
> > > >
> > > > /etc/fstab:
> > > >
> > > > # / was on /dev/sda9 during installation
> > > > UUID=9018bfe2-9de3-4692-9883-fc2f875e6455 /               ext3    
> > > > relatime,errors=remount-ro 0       1
> > > >
> > > > # /boot was on /dev/sda8 during installation
> > > > UUID=c3eb67b1-7f8f-419b-a462-c79a6c76e5de /boot           ext2    
> > > > relatime        0       2
> > > >
> > > > # /home was on /dev/sda5 during installation
> > > > UUID=4802e809-ecaa-4932-bd01-4a816c0bbd4f /home           ext3    
> > > > relatime        0       2
> > > >
> > > > # /media/test_boot was on /dev/sda7 during installation
> > > > UUID=0c98fbe4-ed7c-4134-994a-07d49074e137 /media/test_boot ext2    
> > > > relatime        0       2
> > > >
> > > > # /test was on /dev/sda6 during installation
> > > > UUID=6ad1f928-50b9-4aea-9495-95df46d08d58 /test           ext3    
> > > > relatime        0       2
> > > >
> > > >
> > > >
> > > > blkid -c /dev/null:
> > > >
> > > > /dev/sda2: UUID="4d5250be-75cf-4ce4-9295-ae5e2cabd441" TYPE="swap"
> > > > /dev/sda5: UUID="4802e809-ecaa-4932-bd01-4a816c0bbd4f" TYPE="ext3" - 
> > > > *my /home partition*
> > > > /dev/sda6: UUID="6ad1f928-50b9-4aea-9495-95df46d08d58" TYPE="ext3" - 
> > > > *Karmic / partition*
> > > > /dev/sda7: UUID="0c98fbe4-ed7c-4134-994a-07d49074e137" TYPE="ext2" - 
> > > > *Karmic /boot partition*
> > > > /dev/sda8: UUID="c3eb67b1-7f8f-419b-a462-c79a6c76e5de" TYPE="ext2" - 
> > > > *Jaunty /boot partition*
> > > > /dev/sda9: UUID="9018bfe2-9de3-4692-9883-fc2f875e6455" TYPE="ext3" - 
> > > > *Jaunty / partition*
> > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Help-grub mailing list
> > > > address@hidden
> > > > http://lists.gnu.org/mailman/listinfo/help-grub
> > >
> > >
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