Apple ][ (clone) disk booting
ard at p850ug1.demon.co.uk
Wed Oct 3 17:25:07 CDT 2007
> Aha, OK - that's plausible I suppose... *reading* either format is OK, but
> booting isn't... releasing an upgrade which could no longer make any sense of
> the old format would seem a funny thing to do :-)
This is taking me back many years, and I didn't do much with Apples
anyway, but IIRC the DOS 3.3 system came with a disk that you booted,
then replaced with a 13 secotr disk and it booted that. Since the new
state machine could handle 13 sector disks without problems, and since
the boot PROM was only used for booting, there was no problem after that,
the system acted as a 13 sector one). There was also a program, IIRC
called 'MUFFIN' (why???) on the 16 sector DOS disk that would transfer
files from 13 sector disks to 16 sector.
> I haven't tried the 3.2 media with the Disk ][ drive yet, but if you're right
> about the above then it won't boot (although if catalog works with both disk
> formats then I should be able to boot via 3.3 and catalog the 3.2 disk).
It doesn;t :-(. DOS 3.3 will not natively read a 13 sector disk. The
hardware can do it, the software can't.
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