Date: Fri, 24 May 1996 19:11:32 +0200 (MET DST) From: Wilko Bulte <wilko@yedi.iaf.nl> To: murduth@ludd.luth.se (Joakim Henriksson) Cc: af@biomath.jussieu.fr, freebsd-scsi@FreeBSD.org Subject: Re: How to send "start unit" to disk during boot? Message-ID: <199605241711.TAA20815@yedi.iaf.nl> In-Reply-To: <199605240829.KAA05378@zero.ludd.luth.se> from "Joakim Henriksson" at May 24, 96 10:29:31 am
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> > I have been given a DEC RZ24 (200Mb) SCSI disk which I have > > successfully connected to my PC (133Mhz Pentium, Intel Endeavour m/b, > > AHA2940 controller, IDE boot disk). This disk, like some other DEC > > disks, does *not* spin up when powered up. Other DEC disks have > > jumpers to change this, the RZ24 doesn't seem to have them. > > Some of the Digital (all?) rz disks have the spinup parameter in one of the Not all. > vendor specific mode pages of the scsi disk. Try something like > "scsi -f /dev/rsd?c -m 37 -e -P 3" and change the spinup value to 0 the page > referenced in the m parameter might be diferent. To find out which page it > is you should do "scsi -f /dev/rsd?c -m ??" where ?? is from 0x01 to 0x3f > but maybe in decimal, someone a bit more knowledgable about the scsi command > help me out! I have only done this on a VAX station using the rzdisk utility > which works just like scsi but on rz disks :) Find 'mode8.exe' from gatekeeper.dec.com for the now-Quantum disks of DEC. Or rzspinup.exe, I think that should work for all of them. Uses an ASPI interfaced SCSI card. If you can't find the tools I can send them to you. The newer DEC disks are either made by Seagate or Quantum. Every DEC disk that is labeled 'SWX.....' is a Storageworks Multivendor disk that does staggered spinup on powerup. The disks labeled 'RZ...' are the on-base (read: for DEC systems) drives that need a spinup command. The tendency is to go to staggered spinup for all DEC's drives Wilko (aka bulte@stowks.enet.dec.com) _ __________________________________________________________________________ | / o / / _ Wilko Bulte email: wilko@yedi.iaf.nl |/|/ / / /( (_) Private FreeBSD site - Arnhem - The Netherlands --------------------------------------------------------------------------------
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