*BSD News Article 69196


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From: myers@freebsd.interramp.com (David C. Myers)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Partition error: "no magic"
Date: 23 May 1996 03:50:04 GMT
Organization: PSI Public Usenet Link
Lines: 39
Message-ID: <4o0n9c$han@usenet6.interramp.com>
Reply-To: dcmyers@access.digex.net
NNTP-Posting-Host: ip77.san-francisco3.ca.interramp.com
X-Newsreader: knews 0.9.3


I've been playing with configuring a magneto-optical disk for a little
while now, and everything appears to work, except that I get the following
error whenever mounting a MO disk:

root> mount /dev/od0a /optical
od0: invalid primary partition table: no magic


So far, this has produced no discernible data storage problems; it's just
a bit disconcerting to have that message pop up.  Is anything seriously
wrong?  Here are two disktab entries I've tried (both produce the error):


mo230|230 Meg 3.5inch Magneto-Optical:\
	:ty=removeable:dt=SCSI:rm#3600:\
	:se#512:nt#64:ns#32:nc#216:sc#2048:su#444384:\
	:pa#444384:oa#0:ba#4096:fa#0:ta=4.2BSD:\
	:pc#444384:oc#0:


xmo230|Experimental enlarged 230MB magneto-optical:\
	:ty=removeable:dt=SCSI:rm#3600:\
	:se#512:nt#64:ns#32:nc#217:sc#2048:su#446325:\
	:pa#446325:oa#0:ba#4096:fa#0:ta=4.2BSD:\
	:pc#446325:oc#0:


The xmo230 entry is a bit larger than the mo230 entry (446325 vs. 444384),
and seems to fit my Fujitsu M2512A better.  (The smaller entry produces
messages about the raw size not matching the slice size.)

Any help would be appreciated.

-David.