I'm trying to mount a msdos filesystem that's inside the MBR extended
partition on this drive.

disklabel naturally doesn't see the partition, so I hunted around for a
more appropriate command and found mbrlabel which appears to be exactly
what I want, however I don't seem to be able to get it to work for me.

The disk I'm looking at is wd2, and the only hassle I have is that I
can't write a disklabel to this drive as it's to go into a Windows
machine (which would not understand it, to say the least)

I'm using (from memory)

mbrlabel -w /dev/rwd2

which prints out a disklabel which looks OK (ie, slice a now contains
the filesystem I want) and mbrlabel says it has modified the in-core
label, which is great, however when I try 

mount /dev/wd2a /mnt

mount tells me that /dev/wd2a isn't available ... there is also a note
from the kernel to say that wd2 has no disk label which I already know,
so mount or the kernel must be trying to recreate the in-core disk
label (trashing the modifications that mbrlabel made)

... so if mbrlabel is modifying the in-core disklabel for this drive,
as it says it is, then why isn't it working?  How do I get mount to use
the in-core label rather than looking on disk again?

am I missing something obvious?

-- 
Malcolm Herbert                                This brain intentionally
mjch@mjch.net                                                left blank