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From: jbg@wsc-sun.boeing.com (James Glidewell)
Newsgroups: comp.sys.mac.system
Subject: Sys7 + SCSIProbe3.0 + Syquest = HANG!
Message-ID: <1943@wsc-sun.BOEING.COM>
Date: 11 Jun 91 18:46:39 GMT
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A recent experience I've had may be useful to others...

My configuration -

Mac Plus
PCPC ext. 40 meg (Quantum)
APS SyQuest
System 7 (most of the time ...)
...

Both the Syquest and System 7 are new acquisitions and I've
been doing a lot of disk shuffling of Syquest cartridges.
What I found was that sometimes, for no immediately apparent
reason, dragging a syquest icon to the trash and then 
physically unmounting it caused the Mac to hang with a 
watch cursor.

I was quite puzzled by this, as I knew I had successfully
unmounted Syquest disks earlier.

The explanation came in a recent post by Malcolm Pradhan, who
mentioned that SCSI Probe 3.0 "fools" the Mac into thinking
that the Syquest was not removable (this was a "feature" for
him as he could then use the Syquest for VM).

Testing last night indicated that I could safely "trash" syquest
disks if they had been mounted with the APS PowerTools which
came with the drive. And that disks mounted with SCSI Probe 3.0
resulted in a hang. So .... 

SYQUEST USERS BEWARE -
 
DON'T ATTEMPT TO PHYSICALLY UNMOUNT SCSI PROBE 3.0 -
MOUNTED SYQUEST DISKS !!!

PS's - Does anyone know of a DA/CDEV which will mount SCSI disks which
keeps them marked as removable? Is this a bug in SCSI Probe, or was
it intentional/unavoidable? Anybody know of any SCSI-mount/unmount XCMDS? 

-- 
Jim Glidewell
jbg@wsc-sun.boeing.com
uw-beaver!bcsaic!wsc-sun!jbg