Interpretation of the "new" SCSI Device Numbers

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Article #13354

#13354

From: Michael J. Edelman
Date: Thu, 21 Dec 1989 01:20

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I just received my new Sparcstation (a Sun 4/330), and was rather
surprised when I found out that my two SCSI disks were sd2 and sd6 instead
of sd1 and sd2. I could not find any relevant documention that explained
the reasoning behind this.

It was even more confusing when I found that the boot device was defined
as "sd(,18)".  The system device is sd6.  I have no idea how they get from
sd6 to unit 18 in the boot command.

Does anyone know the "logic" behind the new SCSI device numbering scheme?

Please e-mail response to me and I will summarize to the net if there is
enough interest.

Thanks
Michael Edelman
Tektronix, Inc.

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!asuvax!cs.utexas.edu!rice!sun-spots-request
From: michaele@zephyr.ens.tek.com (Michael J. Edelman)
Newsgroups: comp.sys.sun
Subject: Interpretation of the "new" SCSI Device Numbers
Keywords: Miscellaneous
Message-ID: <4033@brazos.Rice.edu>
Date: 21 Dec 89 01:20:24 GMT
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