Grub Manual
Les Mikesell
lesmikesell at gmail.com
Sat Oct 20 02:51:47 UTC 2007
David Boles wrote:
>
> Hmm... The drive letters will change when you add or remove drives. But
> most people that add and remove drives have some idea of what it is that
> they are doing. And they don't do it as often as they put on or remove
> their shoes.
>
> I have *never* done this, physically add/remove drives thing, in an
> installed Linux myself but I would be willing to bet that Linux, any
> brand, would get confused too.
With the old ide /dev/hdx notation, drives stayed where you put them
according to the controller and cable or jumper position. That is, the
primary drive on the first controller is hda, the slave on the second
controler is hdd whether or not there is anything added or removed in
between. With scsi it is dynamic, with /dev/sd? devices added in the
order they are detected so if you add/remove early in the controller or
drive select chain everything else moves.
> That is what the $PATH, in Linux or Windows, is for I think. ;-)
No, you always mount the filesystems under the same names in Linux, but
that moves the problem to the grub configuration and /etc/fstab where
you tell it what partitions to mount. Auto-detected labels on
filesystems that support them are supposed to solve this problem, but a
default install puts the same labels on every installation so as soon as
you try to move and re-use some drives the problem is even worse.
--
Les Mikesell
lesmikesell at gmail.com
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