ldg@yoda.byu.edu (06/01/91)
Remember back when hard disks first began to appear for the Mac Plus?
("Wow! 20 megabytes! What would I do with that much space! And only $1500!")
People had to worry about whether the heads were left hanging over a valuable
piece of information or "parked" over a designated (empty) area of the
platters when the Mac was shut down and the drive powered off. Then we
all stopped worrying about it. Was it because the Mac incorporated head
parking in its Shutdown routine, or because all disk drive makers started
building drives that parked their heads when the power was turned off?
I am asking because I have acquired a Jasmine Direct Drive 20, one of the
first couple thousand made. It came with a DA for parking the heads if you
planned on moving the drive.
Do I need to use this DA if I plan to move the drive? I will be moving it
often, since it will be used to shuttle large amounts of information to/from
school.
Thanks in advance for your help!
--Lyle
Lyle D. Gunderson N6KSZ | "Any technology without | ldg@yoda.byu.edu
350 CB/BYU | some attendant risk of misuse | CIS: 73760,2354
Provo UT 84602 | is probably trivial" | GEnie: L.GUNDERSON
| --Louise Kohl | AOL: LGundersonwhite@vulcan.anu.edu.au (Dave White) (06/02/91)
On a slightly related note - My SE 2/20 used to turn off the hard disk when I shut down. I used the 'run on shut down' function in Moire cdev once and that did not turn off the hard disk on shut down so I turned it off and the hard disk has never turned off since then (I mean at shut down - obviously at power off it does). I've installed System 7 and updated the SCSI driver so why doesn't it work any more ? All help appreciated, Dave White. -- ----- Dave "Vizard" White ---------------- WEEKLY PROVERB ------------------- ----- Dave.White@vulcan.anu.edu.au ------- "The first bug to hit a clean ------ ----- Australian National University ----- windshield lands directly in ----- ----- Canberra, Australia ---------------- front of your eyes." -------------
6600dayl@ucsbuxa.ucsb.edu (Darryl "NOT Ug" Lee) (06/05/91)
a bunch of people wrote to this subject asking whether the shutdown
option under the special menu actually parked hard disks, specifically
old hard disks, or rather, first generation ("wow--20 megs for $1500")
hard disks...
anyways...i dug up an old (? 1988) cdev by Bruce Tomlin that seems to
do what you ask (park a "classic" hd upon shutdown). No, i don't know
whether it's sys 7.0 compatible. i've been lazy/wary about installing
such a "revolutionary" new os, so i'm waiting until i see how much my
friends' computers crash. :}
i think i got it--SCSI parker, by the way--from sumex-aim....
happy parking....
--Darryl
p.s.--click on his head to get out of the help screen...