On Friday, 18 בJuly 2008, Noam Rathaus wrote:
> I have a strange problem where my external HD is assigned to /dev/sdb and my
> SATA disk is assigned to /dev/sda
>
> But every once in a while, they decide to switch places (during boot), any
> idea how I can "fix" this - so they do not switch places?
Nothing is strange. The only reason most people don't know this
can happen is that they use very simple configurations (e.g:
one or two IDE disks). Anyone working with several controllers
with several disks (e.g: SCSI, Fiber-channel), not to mention
SAN devices got used to this for years.
As Hetz already mentioned, there are two solutions:
1. Identify via volume labels [BTW: this is the default RedHat
since old Red Hat 9.0 IIRC].
2. Identify via volume UUID [support is newer than labels].
To find the mapping of your drives to LABELS and or UUID:
1. ls -l /dev/disk/by-uuid
2. ls -l /dev/disk/by-label
3. blkid /dev/sda2
Cheers,
--
Oron Peled Voice/Fax: +972-4-8228492
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