Disk geometry query

[Louis Demers]

FOPERATOR at tekno.chalmers.se (Daniel Berglund) writes:
>We have a spare Jasmine DirectFile 300 (CDC 94171-307, that's a Wren IV,
>right?) which we would like to use on our Sparcstation 1. Does anyone know
>the geometry of this disk or have a format.dat entry? There is already an
>"CDC 94171-344" entry - is there any significant difference between these
>disks?

While the sticker might say 94171-307, a SCSI query for it's ID might
reveal it is a 94171-9, that is  a MacWren IV. The geometry of both drives
is probably 1409 cylinders, 9 heads, 46 sectors.  I beleive it has a
slightly smaller capacity than the 94171-344.  I succesfully formatted one
on a sun 4-110, but when came time to boot of of it,  I got the following
error: sense key =2 error =5;

The only difference between a Wren and MacWren is the firmware.

I anyone ever got a sun 4-110 to boot off a 94171-307 (94171-9) I would
appreciate hearing about it.

| Louis Demers              | DREV, Defence Research Establishment,Valcartier |
| louis at asterix.drev.dnd.ca | POBox 8800, Courcelette,Quebec, CANADA, G0A 1R0 |
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