Re: Commodore PLC TIB DD-001 / Drive 2001

From: smf <smf_at_null.net>
Date: Wed, 23 May 2018 11:12:44 +0100
Message-ID: <61029604-812f-5b2c-06e0-a1eedaf968db@null.net>
On 23/05/2018 06:35, Baltissen, GJPAA (Ruud) wrote:
> I never realized that. If so, what FAT did IBM use for their 2.8 MB floppy drives, FAT16?

I never saw one, but according to:

http://www.datadoctor.biz/data_recovery_programming_book_chapter3-page4.html

2.88mb drives used 1k clusters, so each entry in the file allocation 
table referred to 2 sectors.

It also says 720 disks also use 2 sectors per cluster, which I didn't 
recall. So technically that pushes the limit to 4mb.

It's possible that the code assumes it won't have to cope with any more 
than 720 x 1k clusters, especially if it keeps the entire FAT in RAM.
Received on 2018-05-23 13:00:08

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