On 27/05/2011 10:15, John Robinson wrote:
[...]

I'm not entirely sure where dev.ID_ etc are supposed to be coming
from, but if it's that `blkid -p -o udev /dev/block/8:0` then I'm
afraid CentOS 5's blkid doesn't understand the -p or -o udev options,
it doesn't produce any output for whole drives with partition tables,
and there isn't a /dev/block directory. It's blkid 1.0.0 from
e2fsprogs 1.39-23.el5_5.1.

If that knocks CentOS 5 support on the head then so be it...

Hmm, udevinfo might be of some use. Still doesn't say it's found a DOS
partition table, but it does get you e.g. ID_FS_TYPE=linux_raid_member 
and perhaps `file -s` will tell you there's DOS partition table (sort of).

Cheers,

John.