[TriLUG] [eee] post-install, grub OK from external stick but not from internal SSD

[Joseph Mack NA3T]

On Thu, 24 Apr 2008, Tom Roche wrote:

> (hd0) /dev/sda

kernel device /dev/sda is known as (hd0) by the BIOS

> * SSD's /boot/grub/menu.lst has
>
> title Normal Boot
>         root (hd0,0)

this line is redundant, you have a root option in the next 
line

>         kernel /boot/vmlinuz-2.6.21.4-eeepc quiet rw vga=785 irqpoll
> root=/dev/sda1

you don't have a disk here. Presumably grub will default to 
(hd0,0). It would be better to explicitely state a disk.

kernel (hd0,0)/boot/vm.....

>         initrd /boot/initramfs-eeepc.img

no disk here either

>   and no stanzas for booting from USB.
>
> * stick's /boot/grub/menu.lst has
>
> title           Ubuntu 7.10, kernel 2.6.22-14-generic
> root            (hd0,0)

mount /dev/sda1 as root after booting

> kernel          /boot/vmlinuz-2.6.22-14-generic

again no disk specified. presumably will boot from (hd0,0)

> root=UUID=45037d5d-b0f4-4d19-b00c-4f4aebc84a02 ro quiet splash

you risk a collision with the root line above. This seems a 
complicated and error prone way of describing a disk. Is 
there a reason you don't want /dev/sda1 or (hd0,0)?

> initrd          /boot/initrd.img-2.6.22-14-generic
> quiet
>
>   and
>
> # This entry automatically added by the Debian installer for an existing
> # linux installation on /dev/sda1.
> title           Normal Boot (on /dev/sda1)
> root            (hd1,0)

does the BIOS know about (hd1,0)? is it in device.map? I 
assume it's your flash stick and will be /dev/sdc1 after the 
kernel boots.

> kernel          /boot/vmlinuz-2.6.21.4-eeepc quiet rw vga=785 irqpoll
> root=/dev/sda1

boot from (hd0,0), mount /dev/sda1 as root, which collides
with the /dev/sdc1 above

> initrd          /boot/initramfs-eeepc.img

again no disk specified. presumably will mount initrd from 
(hd0,0)

Joe
-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
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