grub

[Patrick Dupre]

On Fri, 27 Feb 2009, Mikkel L. Ellertson wrote:

> Patrick Dupre wrote:
>> Hello,
>>
>> I have 2 systems (identical) on 2 different disks:
>> THis is my /etc/grub.conf
>> boot=/dev/sda
>> title Fedora (2.6.23.17-88.fc7)
>>         root (hd0,7)
>>         kernel /boot/vmlinuz-2.6.23.17-88.fc7 ro root=/dev/sda8 rhgb
>> quiet selinux=0
>>         initrd /boot/initrd-2.6.23.17-88.fc7.img
>>
>> title Fedora (2.6.23.17-88.fc7 new)
>>         root (hd1,4)
>>         kernel /boot/vmlinuz-2.6.23.17-88.fc7 ro root=/dev/sdb5 rhgb
>> quiet selinux=0
>>         initrd /boot/initrd-2.6.23.17-88.fc7.img
>>
>>
>> I can easily boot on /dev/sda8, but not on /dev/sdb5, However, if I do:
>>
>>         root (hd0,7)
>>         kernel /boot/vmlinuz-2.6.23.17-88.fc7 ro root=/dev/sdb5 rhgb
>> quiet selinux=0
>>         initrd /boot/initrd-2.6.23.17-88.fc7.img
>>
>> then I can boot on /dev/sdb5
>>
> The thing you have to remember is that the "root (hdx,x)" option is
> a Grub option, not a kernel option. It tells Grub where to find the
> kernel and initrd files. If there are both in /dev/sda8, then you
> need to use root (hd0,7) for both. If the kernel and initrd for the
> new install of f7 are in /dev/sdb5, then you can use root (hd1,4).
>
> Mikkel
Hi Mikkel,

I am not sure about what you said.
Even not saying root (), grub should find the image if device.map is
correct ?
Anyway, I tried what you said by setting root (hd1,4), but stil it does
only find the image on hd0,7 !!

>

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  Patrick DUPRÉ                      |   |
  Department of Chemistry            |   |    Phone: (44)-(0)-1904-434384
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