SCSI disk names change when adding / removing devices.

[Jeff Vian]

On Sun, 2004-07-11 at 21:56, Naoki wrote:
> Hi all,
> 
>     I have a problem, when I install my OS ( FC2 ) on my nice machine 
> with an internal scsi controller my two disks are sda and sdb, which is 
> all nice and expected.  But then when I add a new scsi card and hook up 
> the external disk array the new array now becomes sda which has a very 
> negative effect, can't boot..
> 
> Any helpful hints?  I could label the disks sure but then swap is still 
> on sda2 and that's a problem.
> 

The order of the scsi adapters being configured at boot time causes
that.... first adapter --> first device ==> sda.  AFAIK the easiest way
to fix that is to swap the positions on the mobo so the original adapter
is seen first.

BTW, by the time you labeled the partitions you could also change fstab
for swap as well as the filesystem partitions.  The real problem I would
see is the location of the grub boot image.

HTH
Jeff