Timothy Murphy a écrit :
> François Patte wrote:
>
>> Bonjour,
>>
>> I have two HD (sda sdb) and grub installed on the sda MBR.
>>
>> I want to install grub on the sdb MBR because the system is installed on
>> the sdb HD.
>>
>> At this time, sdb is formatted like this:
>>
>> / on sdb1
>>
>> the remaining of this drive is a part of a lvm gathering this remaining
>> and a 3rd disk (sdc)
>>
>> sda has an extended linux partition with / on sda5 and /boot on sda6
>> this disk was used in a previous install and is no more in use now,
>> except the MBR and the grub.conf file which located in /boot/grub (on
>> sda6).
>>
>> I want to re-format this sda to use it for backups and some other
>> things, so I have to move the grub.conf somewhere else (/boot/grub on
>> sdb1).
>>
>> How can I proceed?
>
> I don't really see any problem.
> There are 2 bits of grub;
> the actual loader which normally goes in the MBR,
> and the support files.
> You could install grub in the sdb MBR,
> provided your BIOS allows you to boot from sdb.
> (You will be offered a choice if you go into the BIOS at boot time.)
>
> But there is no reason why you should not have grub in the sda MBR
> and /boot with the grub support files on sdb.

I suppose that what you call "support files" is the /boot/grub/grub.conf
isn't it? So how do I tell grub, installed in the sda MBR to query its
configuration file in /boot/grub which is located in sdb1?

Thanks.

--
François Patte
Université Paris 5 - Paris