last night i asked if anyone knew how to get a cdc 9720-1230 drive
working with the xd7053 controller on a sun 3/280 running 4.1.1_U1. I
recieved a number of replies. three of these were offers to help
directly, and one person offered to help arrange for their company to
sell me a replacement for my dying fujitsu m2361 (these were used
drives that they were no longer using, this was not from a 3rd party
supplier). as it turned out i ended up talking on the phone and
receiving faxed pages of the cdc manual to finally get the drive
working. i was able to format the drive, partition and newfs the
partitions. at this point i've almost restored the /usr partition
from backups of the fujitsu drive. all appears to be in order now.
thanks very much to the following for their help:
Ron HALL <thorn@java.CC.McGill.CA>
Leonard E. Sitongia <sitongia@ncar.ucar.edu>
Mike Raffety <miker@il.us.swissbank.com>
Stuart McRobert <sm@doc.ic.ac.uk>
the format.dat entry i used was:
disk_type = "CDC EMD 9720-1230" \
: ctlr = XD7053 \
: ncyl = 1633 : acyl = 2 : pcyl = 1635 : nhead = 15 : nsect = 82 \
: rpm = 3600 : bpt = 50400 : bps = 606
the switch settings on the top of the drive are (starting from the
front of the drive):
1111010011 0110011111
(1 == closed)
then the jumpers (labeled as the first line, 1 = connected):
FF RUNT IDX SWPD SWP1 RTN
NC 1 0 1 1 0
then on the back of the drive there are 2 blocks of switches, one with
10 switches, the other with 8. the lower block of 8 should be all
open. the other block should be (starting from the top):
0111011001
(0 == open)
again thanks to everyone for their help. have a happy new year!
-- // E. John Benjamins -- <johnb@edge.cis.mcmaster.ca> // "Facts are simple and facts are straight. Facts are lazy and facts are late. \\ Facts all come with points of view. Facts don't do what I want them to." \\ - David Byrne (Talking Heads)
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