As Doug Ambrisko wrote...
> Andy Doran writes:
> | I believe that this is an issue with CAM. I have a bunch of DEC RZ25 disks
> | here which work fine with ULTRIX, NetBSD and Linux on several different
> | machines. After upgrading from FreeBSD-2.2.6 to 3.0 (and -current)
> | the system hangs on boot whenever an RZ25 is hooked up. This is with a
> | crappy 'ol Adaptec 1542CP controller.
> Most DEC drives as shipped with DEC system do not spin up on power up
> (for sure not in the era of the RZ25). I recall that some DEC drives
> had a jumper to select spin up on power up but I don't think all of them
RZ25 has a spinup jumper. Remove jumper 8 on J6 (for reference,
jumper 5 & 7 should be left in) for spinup on powerup.
> did. I think they was also a mode page switch. I also recall that the
Yes, a vendor unique mode page setting.
> 1542 BIOS had options to send the command to spin up on power up.
Not all 1542, the 1542C can do it, the older ones don't IRRC.
| / o / / _ Arnhem, The Netherlands
|/|/ / / /( (_) Bulte WWW : http://www.tcja.nl
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