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From: philip@cel.cummins.com (Philip D. Pokorny)
Newsgroups: comp.sys.apollo
Subject: Re:  SCSI disk mount devices...
Message-ID: <9106021918.AA13604@cel.cummins.com>
Date: 2 Jun 91 19:18:24 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 18

It appears that the Apollo file system will allow you to mount a disk
without ACTUALLY creating a /dev entry to describe the device in the
usual UNIX style...  When we converted our DSP90's to 2500's we noticed
this because during the transition, we had a 90 diskless to it's 
replacement 2500 and all the volumes on the 90 mounted into the 2500's
file-system.  We were using Aegis exclusively but the patch tape that
fixed the bug stated that the bug could only be fixed if you used the
/etc/mount command and not /com/mtvol!  Upon diving in to the whole
UNIX mount procedure we noticed that /etc/mount would say we had
volumes mounted (ie /dev/dsk/W0d0s1, etc) but such a file does not
exist in the /dev/dsk directory.

Perhaps these 'phantom' disk devices are what the original poster is
experiencing...

Later,
Phil
:)