sdb@sfsup.UUCP (S.Brener) (07/30/87)
When I try to boot my 128K MAC from some disks I get a frowning face sitting on top of a 0f0064 error code on a blank screen. Once the system is booted inserting some disks causes the error: 'this disk is unreadable to appear'. Any suggestions? Are bad drives common on MACS?
tomas@apple.UUCP (Tom Taylor) (07/31/87)
In article <1712@sfsup.UUCP> sdb@sfsup.UUCP (S.Brener) writes: >When I try to boot my 128K MAC from some disks I get a frowning face >sitting on top of a 0f0064 error code on a blank screen. >Once the system is booted inserting some >disks causes the error: 'this disk is unreadable to appear'. > >Any suggestions? Are bad drives common on MACS? Could you be possibly trying to stick a double-sided (800k) disk into the single-sided (400k) disk drive found in a 128k Mac? Tom Taylor/Development Systems Group
derek@mind.UUCP (Derek Gross) (08/04/87)
In a couple articles, people write: >in article <1712@sfsup.UUCP>, sdb@sfsup.UUCP (S.Brener) says: >> >> When I try to boot my 128K MAC from some disks I get a frowning face >> sitting on top of a 0f0064 error code on a blank screen. >> Once the system is booted inserting some >> disks causes the error: 'this disk is unreadable to appear'. >> >> Any suggestions? Are bad drives common on MACS? > > It's probably the disks, not the drive. My 512e's internal 800k drive is definitely bad - it will not accept disks which work on other computers and on my external drive. One minute it was working and I shut it down, the next minute it refused to reboot. I don't think there's really anything I can do other than take it in for for repair and hope it doesn't cost too much, but does anyone have any suggestions? (Either what's wrong or what I can do.) Derek Gross derek@mind.princeton.edu ...seismo!princeton!mind!derek
omh@nancy.UUCP (08/04/87)
In article <112@stech.UUCP> sysop@stech.UUCP (Jan Harrington) writes: >in article <1712@sfsup.UUCP>, sdb@sfsup.UUCP (S.Brener) says: >> >> When I try to boot my 128K MAC from some disks I get a frowning face >> sitting on top of a 0f0064 error code on a blank screen. >> Once the system is booted inserting some >> disks causes the error: 'this disk is unreadable to appear'. >> >> Any suggestions? Are bad drives common on MACS? > [suggestions about bad disks ] Sounds like a bug I ran into when making up a Master disk that cost me some money... Seems that [at least sometimes] when you create new boot blocks by dragging a System and Finder onto a fresh disk, you may find that the blocks are unreadable on old ROM macs. Scenario: You're running the latest finder/system on your MacPlus and you create a new disk. You copy onto the disk the old System/Finder 2.0/4.1 so that it can be read by 128K macs too [needless to say this is a 400K disk!]. Surprise! The boot blocks don't come from the old system/finder, but from the one on your hard disk! It seems that the old Roms don't think too highly of the new boot blocks teamed up with the old system/finder! [as in sad mac 0f0064]. Well, when you advertise that your product works on all sizes Macs, and you ship a bunch of these things out to your customers... Moral: If you want to make sure that your product runs under all weathers, make certain you're running the same System/Finder that you're installing! Fix: If you've got the 128K and some sad mac disks, boot up with a fresh system disk, get the suspect disk as the second disk on the desktop, and throw away the System/Finder on the suspect disk, and copy in your good system/finder. Naturally, make a copy of the suspect disk first and use the copy!!! -Owen Owen Hartnett Brown University Computer Science omh@cs.brown.edu.CSNET omh%cs.brown.edu@relay.cs.net-relay.ARPA {ihnp4,allegra}!brunix!omh
klash@uvicctr.UUCP (Karl B. Klashinsky) (08/11/87)
I have a 128K Mac (now upgraded, at last). The symptoms you describe
are IDENTICAL to the symptoms I encountered when mine was still a
128K. Worst of all, the errors appear to occur randomly (that is, not
all the time).
Most likely, it is the disk drive. It was for me. It took me a while
to nail it down. The local Apple dealership ran the Mac diagnostic
program through my machine, and it (the program) claimed that my
Mac was a-ok. Take it home, plug it in, and it doesn't work! So,
don't be surprised if the same happens with yours.
Karl
--
Karl Klashinsky "Gee, I wish I could find a
University of Victoria neat quote to put in my
British Columbia, Canada .signature"
<me>
e-mail: {uw-beaver, ubc-vision}!uvicctr!klash