Re: prodos filesystem

[hirsch@emba-news.uvm.edu (Steven N. Hirsch)]

Pat St. Jean (stjeanp@enmu.edu) wrote:
: Hello everyone!
:   I was wondering if anyone could get me the information on the exact setup
: of the prodos filesystem.  See, I've got a bunch of IIgs 800k floppies that
: I want to get the data off of.  I think that my Linux system can read the
: disks, but I'm not even sure of that.  

I can almost guarantee that your Linux system cannot read disks
written on a //gs.  PC's use MFM encoding on the diskettes and older
Apple machines (pre-Mac) use GCR.  They are utterly incompatible at
the media level.


: But what would help is some info on
: how the files are organized, about the only thing that I even think that I
: remember is the VTOC was on track 11 (or was that Dos 3.3).  I'm not sure
: at all.  I'm thinking about writing a prodos filesystem for Linux...  Any
: help is greatly appreciated!

The best description I've ever seen of ProDOS internals is in a book I
have at home (spaced on the name at the moment, but it's by Gary
Little and is probably out of print).  You might also find a copy of
Inside Apple ProDOS by Worth & Lechner if you scout the nets.  Either
will give you enough to go on.  However, the media incompatibility
will be the major hurdle..

--
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|Steven N. Hirsch			 "Anything worth doing is worth    |
|University of Vermont			  overdoing.." - Hunter S. Thompson|
|Computer Science / EE                                                     |
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