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- Newsgroups: comp.sys.sun.hardware
- Path: sparky!uunet!munnari.oz.au!uniwa!bilby.cs.uwa.oz.au!wambenger!janet
- From: janet@cs.uwa.oz.au (Janet Jackson)
- Subject: Re: Sun 424Mb disk doesnt spin up until boot time (SOLVED)
- Message-ID: <janet.715313831@wambenger>
- Sender: usenet@bilby.cs.uwa.edu.au
- Nntp-Posting-Host: wambenger
- Organization: Dept. Computer Science, University of Western Australia.
- References: <janet.714982388@dunnart> <1992Aug28.132605.5080@lloyd.Camex.COM>
- Date: Tue, 1 Sep 1992 02:17:11 GMT
- Lines: 32
-
- In <1992Aug28.132605.5080@lloyd.Camex.COM> normc@lloyd.Camex.COM (Norm Caseley) writes:
-
- > We have experienced the same problem that you describe and have found
- >a hardware solution of removing jumper 3-4 from J6 on the Seagate ST1480N
- >drive. (We have not received any of the Fujitsu version of the 424MB drive.)
- >This jumper controls the "motor start option" and removing it will force the
- >drive to always spin-up on power-up.
-
- Yes..I asked a Sun engineer about this and he'd seen it before...we removed
- the jumper and it spins up just fine.
-
- > There may be an easier solution. From information that we received
- >from Sun, it seems that setting the drive target number to either 1 or 3 will
- >cause the drives to spin up under control of the boot PROM. Drives that are
- >set up as target 0 or 2 will spin up when they are probed during the SunOS
- >boot process. So, if you have the freedom to try a different target number
- >for your external 424, you may not need to open the box and look for the
- >jumper (especially helpfull if you do not have the hardware diagrams). We
- >have had success booting from an external 424 hooked up to an IPC that
- >contained a 207MB drive.
-
- I'm not sure about this - I tried various SCSI targets on the drive,
- without success. Maybe it depends on the PROM revision or something.
- The jumper is the definitive solution - although it's an awkward beast
- to get to.
-
-
- Janet Jackson
- <janet@cs.uwa.edu.au>
- Systems Administrator
- Department of Computer Science
- The University of Western Australia
-