🚀 go-pugleaf

In article <B0AD858B966811969AE@192.168.1.1>, Paul Durrant
<pdurrant@durrant.demon.co.uk> writes
>In article <bPI9MAApBeh0EwjZ@charmf.demon.co.uk>,
>Dave Besnard <daveb@charmf.demon.co.uk> wrote:
>
>> Thanks for responses to date. My main problem was that the de-virused
>> and damaged system was 7.5.5 and although I had upgrade floppy disks
>> from version 7.3.1 to 7.5.5 the machine would not accept them -
>> presumably because the disks themselves were 7.3.1. Because the machine
>> stores the current version of the OS in non-volatile memory it is only
>> possible to upgrade the OS to a higher version. In my case 7.6.1 or
>> 8.0.0.
>
>This is incorrect. No Macintosh stores the current system version in it's
>non-volatile memory (PRAM). Also, there is no system version 7.3.1. Perhaps
>you meant 7.5.3? The only reason you'd be unable to install 7.5.3 on a
>machine would be if the machine was newer than 7.5.3 so that the installer
>didn't recognise it.
>
>Paul Durrant
>
Thanks for your correction. My mis-conception was due to the following.
The machine that had had the virus attack was running MacOS 7.5.5 which
had been upgraded from 7.5.3 using upgrade diskettes. I have an
identical 8500/120 machine which is my own personal workstation and ran
from an identical 1 gig hard disk drive to the problem Mac. This ran
MacOS 7.5.3 and would boot from the hard drive _and_ my Disktools
diskette. When I tried to boot the bad Mac from the same Disktools
diskette it refused, giving an error message - I can't remember the
exact wording - along the lines, " This machine cannot load this version
of the operating system...". Perplexed at this, I then swapped the hard
drive from my machine into the bad Mac and to my amazement produced the
same error message. My hard drive would not boot on the identical
machine although it undoubtably had the correct version of enabler
installed.
I then replaced the hard drive in my machine and it booted, no problem.
I upgraded my machine from 7.5.3 to 7.5.5 using the upgrade diskettes
and it all worked fine. Furthermore on installing my hard drive back
into the bad Mac it booted no sweat. What I did then was to add the
users hard drive to the SCSI bus and transfer all the required data
across to my hard drive. Having recovered all the users applications and
data I've just left the drives permanently swapped. The user has now
upgraded to MacOS8. I now have initialised the users hard drive and
installed my own OS8. 
I don't see how the above can be attributed purely to enabler problems
!! 

-- 
Dave Besnard