sdc suddently sdd?

[Rick Sewill]

On Thu, 2006-12-28 at 14:07 -0500, Kurt Wall wrote:
> On Thu, Dec 28, 2006 at 01:43:04PM -0500, Tom Horsley wrote:
> > On Thu, 28 Dec 2006 12:58:28 -0500
> > Tom Horsley <tomhorsley at adelphia.net> wrote:
> > 
> > > I just realized that sometime fairly recently my usb2
> > > drive I use for backups has stopped showing up as
> > > /dev/sdc and instead shows up as /dev/sdd (with no
> > > device named /dev/sdc anywhere).
> > 
> > Actually, it was weirder that just the name change.
> > A "df" command showed /backup already mounted on /dev/sdc5
> > and the free space about what I'd expect, but if I did an
> > "ls" on /backup, there was nothing there, and if I
> > did an "fdisk -l", it reported /dev/sdd, but not /dev/sdc.
> > 
> > It's like the name changed sometime after the system was already
> > up and the drive mounted.
> 
> I've seen this happen -- I've just assumed I manually mounted something 
> (usually on top of something else) instead of letting the automounter 
> handle it. Maybe I'll pay more attention next time it happens and see
> if I can figure out what happens.
> 
> Kurt
> -- 
> Be frank and explicit with your lawyer ... it is his business to confuse
> the issue afterwards.
> 

I had a similar problem.  

My usb drive either appeared as /dev/sdb or /dev/sdf.  

I finally labeled the drive using e2label -- my disk is formatted ext2
I think I mounted it once, guessing if it was /dev/sdb or /dev/sdf
Then I did e2label /dev/sdf ST330083_1A_305

I put an entry in /etc/fstab
LABEL=ST330083_1A_305   /media/usbdisk          ext2    user,noauto

I now mount the device by doing mount /media/usbdisk

-Rick