Re: My laser 128

[dog_cow@macgui.com (D Finnigan)]

Michael J. Mahon wrote:
> Antoine Vignau wrote:
>> 
>> For my knowledge, from where did you get that information, Michael?
> 
> I don't have a specific reference--that was just from memory.
> 
> I just checked a couple of places I might have read it, but came
> up empty.  In fact, I haven't found any specific information on
> the ProDOS Filer formatting algorithm.
> 

I too checked my Apple documentation last evening. I examined the following
volumes:

- ProDOS User's Manual (an entirely useless manual!)
- BASIC Programing with ProDOS
- ProDOS Technical Reference Manual

All three did not say anything about detecting bad blocks. But I wasn't
reading an Apple manual, so maybe the other of the 3rd-party publication
just made an assumption.

Interestingly enough, the ProDOS User's Manual alludes to the fact that
formatting a disk helps with bad blocks.

It suggests (slightly paraphrased):

"If you find a disk that has bad blocks by using the Detect Bad Blocks
feature, you should immediately copy all files from that disk to a new disk,
then format the old disk."

-- 
]DF$
Mac GUI Vault - A source for retro Apple II and
Macintosh computing.
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