BLuRry wrote:
> On Jan 25, 3:27 pm, lyricalnanoha
>  wrote:
>> I got this disk that i/o errors on one file when I read it.  Got it to
>> Advanced Demuffin to a normal DOS 3.3 without error, i/o errors same
>> place.  Pulled it up with ADTpro, it doesn't i/o error there but it breaks
>> when it would ordinarily do a disk status check (I think).  Then I replace
>> the DOS with UniDOS and it works fine... but when I bring it back to the
>> hardware it i/o errors as before... very strange.
>>
>> - btw - it's Word Wizards v1.0, by MECC
>>
>> -uso.
> 
> I saw something mentioned here -- but I don't know if it applies to
> cracked MECC titles or not.
> http://stason.org/TULARC/pc/apple2/faq/07-010-How-can-I-copy-disks.html

Sounds like a "nibble signature" check..  Perhaps ADTpro has relaxed
error checking.

-michael

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