errrr...ok!
it sounds like performing a low level format needs some special
equipment that I'm not likely to have. If it can't be done on a Mac
(now or old) or a Lisa, then I'm kinda screwed.
One other thing I have noticed is an error 10100 next to what I guess
is the lisa equivalent of 'Sad-Mac'. Is this related to the drive? I
can not find any reference to this code.
So, I will try to pursue the IDEfile direction. I have no knowledge
of electronics, however I feel confident with the soldering challenge
at least.
Helmut, it sounds like you have built one before. I may have some
questions for you in the near future ;-)
I won't give up on the Sun REMarketing drive yet. Maybe I'll email
SUN REM direct.
If I don't have the tools, maybe they can still reformat my drive for
me.
Thanks for your reply
P
On Nov 3, 2005, at 5:58 PM, Dr. Helmut Post wrote:
Hello Phil,
error 85 means: you have reached the hard disk time-out limit...
the hard
disk hasn't answered within a given time- probably the system
track, boot
secor is bad . You need a fresh low level format.- or a new drive
if the
number of bad blocks exceeds 30 counts.
I have just finished telling the list that I got my SUN REM drive
working again, and that I thought the cause was overheating
(Installed a fan). However I still get constant error 85 messages.
If I reinstall 7/7 everything seems fine, for a short while, then
error 85 starts happening again.
Probably a thermal error with one of the chips ... probably the SMS
OMTI
20813B (MFM controller).
Do you have a freezing spray to cool down the chips to locate the
error on
the controller?
I have the same problems- no way to get these chips today- only if
you rip
the chips from an Amiga 1000 sidecar (PC-XT hardware expansion box)
or form
an old Atari ST MFM hard disk controller.
The SUN REM drive uses a Kalok KL320 (20mb) MFM drive. I guess these
are getting very old now. Maybe I need to look for another 20mb MFM
drive to replace the Kalok with. Will any MFM 20mb drive work? For
example Kyocera KC020, Miniscribe m8425 or Western General WD362.
Yes, you can use all these disks- provided that your controller is ok.
I'm testing these MFM hard disks on my old 80486 IBM AT with an
Adaptec ACB
2310 MFM controller card.
But: You have to know how to perform a low level format on the SUN
controller first!
Or even better, does an adaptor exist for MFM to IDE? I couldn't find
one by doing an internet search.
No, there is no such adapter- as far as I know.
Choose the IDEFile instead- it's offering full future Widget
compatibility
as is fully Profile compatible (5 MB and 10MB).
However, for the life of the machine, I still believe the IDEfile is
the best option for the future. I should start thinking seriously
about this option, otherwise 7/7 will be lost to my machine for ever.
Yes, I'll recommend you this controller- it's really great!
Helmut
Thanks
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