SUMMARY: RZ55 as boot disk

From: Stewart Castaldi (stewartc@amc.com)
Date: Tue Aug 24 1993 - 06:19:56 CDT


Original question:

> I have a spare Dec RZ55 scsi disk that I would like to use as the boot
> disk on a Sun 3/280. I find that the disk does not spin up on power-on
> and all accesses to the disk return errors. If the disk has been spun-up
> by a previous access, like from format on a running system, it will then
> work as a boot disk. Does anyone know if there is a jumper that can be
> added/removed on the drive to enable spin-up on power-on?

Yes, it is possible to get the disk to spin up on power on. Many thought as
I did that it was a jumper on the disk drive. This is not the case. On the
DEC drive it is an eeprom setting. The easiest way to change the setting is
to have a DEC system (VMS or Ultrix) and the apropriate software. One
respondent also had a program for a PC. This is the answer the describes
the solution that I used.

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No, it's not a jumper. I think you do it in software (on a DECstation
running Ultrix) using the rzdisk program.

1) unmount the disk, eg rz2
2) /bin/rzdisk -c ask /dev/rrz2c
3) work your way through the disk drive parameters until you get to
    page 37 on an RZ55 I think, where you will find
       Spinup on power up
4) select change

Bevin Steer, Systems & Networks Team,
------------ ------------
ccbjs@levels.unisa.edu.au
Phone: +61-8-302-3271 Fax: 302 3385
Information Technology Unit, University of SA., The Levels, SA 5095, Australia

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Stewart Castaldi DNS: stewartc@amc.com
Applied Microsystems Corporation UUCP: uunet!amc-gw!stewartc
Redmond, Washington 98073 Dial: (206) 882-5326



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