Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!rice!rice!sun-spots-request
From: pkinbg!caxwgk@relay.eu.net (Wolfgang G. Kuehnel)
Newsgroups: comp.sys.sun
Subject: Hitachi DK312C-25 format.dat needed
Keywords: Miscellaneous
Message-ID: <1990Oct7.224800.29811@rice.edu>
Date: 7 Oct 90 21:30:00 GMT
Sender: sun-spots-request@rice.edu
Organization: Sun-Spots
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Approved: Sun-Spots@rice.edu
Originator: spots@walhalla.rice.edu
X-Sun-Spots-Digest: Volume 9, Issue 332, message 7

I need the format.dat entry for a 3,5 inch SCSI disk drive from
Hitachi, type is : DK312C-25. What I found out up to now is:
--------------------------------------------------------------
disk_type = "Hitachi DK312C-25" \
        : ctlr = MD21 : fmt_time = 4 \
        : ncyl =  1074 : acyl = 2 : pcyl = 1076 : nhead = 12 : nsect = 38 \
        : rpm = 3600 : bpt = ?????
--------------------------------------------------------------
As you can see above, the bpt-parameter is missing. I'd like to know
the appropriate value for that drive, or, better, a algorithm to calculate
it. The SunOS-Manual says about "bpt":

> must be assigned the physical number of bytes per track for the disk type.
> This number is used to calculate the boundaries for defects [.....]

Any help would be greatly appreciated.
	Wolfgang Kuehnel
	UNIX Support Team
	Philips Kommunikations Industrie AG