Re: GS/OS 4.x and GS/OS 5.x disks

[mjmahon@aol.com (Michael J. Mahon)]

TeoZ asked:

>What is the best method of transfering images to the IIgs?
>
>I tried to transfer OS 6.01 to a iigs machine I recently purchased and its
>having problems reading the disks. used new 740k floppies on Q950 machine
>(the floppy had been replaced after I got the 950 but its still the old auto
>inject variety) using diskcopy 4.2 OS 8.1

I have a theory which you may wish to test.

I suspect that several cases of Auto-inject-Mac-3.5" to Apple-II-3.5"
incompatibility are actually a result of marginal drive alignment,
resulting in the Apple II head reading some older data combined
with the intended track and, consequently, getting errors.

This can be easily tested by bulk-erasing a DSDD 3.5" floppy with
a strong AC field (preferred) or a strong permanent magnet (workable).
The disk can then be reformatted on the Mac drive and then written
and carried to the Apple II.  If this works, then the alignment of the
drives (relative to each other) is sufficiently bad to make old inter-
track interference a problem, but not so bad that data cannot be
recovered if there are no old interfering tracks.

(All this assumes that the ordinary questions have been addressed,
such as media type and drive speed.)

-michael

Check out 8-bit Apple sound that will amaze you on my
Home page:  http://members.aol.com/MJMahon/