Re: LOST DATA ON DOS 3.3 DISK

["Michael J. Mahon" <mjmahon@aol.com>]

William Heckel wrote:
> Robert,
>
> I dunno if this will help or give you a direction to go in but check out
>
> http://www.wap.org/a3/a3library/a3repair.html
>
> And search the page for Lazarus. Its about 3/4 of the way down under Cat 
> Fixer.  I vaguely remember a program called Lazarus, I think it may have 
> been on a BBS or a type in program from either Nibble or Computist that 
> restored deleted / damaged files as long as no new data was written to the 
> disk.

This works only with SOS or ProDOS disks, so it wouldn't be a
good idea to turn it loose on a DOS 3.3 disk.  ;-)

> "Robert O Greenawalt" <av261@lafn.org> wrote in message 
> C1238E4F.23691%av261@lafn.org">news:C1238E4F.23691%av261@lafn.org...
>
> > Hello! Does anyone know how to recover lost data from a DOS 3.3 disk I 
> > just
> > wrecked? I have the usuals for ProDos, but not DOS 3.3. Thanks...

A lot depends on how it was "wrecked".

If you happened to overwrite one of the first three tracks, then
it's easy to re-write DOS using Copy II Plus, for example.

If you overwrote the catalog track ($11), then it's harder, but
still probably recoverable.  I don't know of any automatic recovery
programs that will do that for DOS 3.3, but I'll bet someone here
does.

If you overwrote some part of your data, then whatever is overwritten
is probably gone, but the rest of it is likely to be recoverable with
some manual work (using Bag of Tricks programs, for example).

If you put the disk up on the refrigerator with a magnet, then parts
of some of the data may still be recoverable, but it will take some
serious putting of Humpty Dumpty back together again.  ;-)

If you're not in a rush, contact me offline and I'll give it a try.

-michael

New, faster SUDOKU v2.0 solver for Apple II's!
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