In article <20031216195451.GB1257@antioche.eu.org>,
	Manuel Bouyer <bouyer@antioche.eu.org> writes:
> If I remember well, the real limit is 128k, by setting the sector count to 0.
> I guess we'll find broken drives that won't handle this properly :(

When Commodore tried to use multi sector read upto 128KByte in the
IDE driver of the A600, A1200 and A4000 it turned out that there
are three classes of drives:

1.) Drives which can handle 128KByte.
2.) Drives which can handle 128KByte - 1 block.
3.) Drives which can handle 64KByte.

Drives in class 2. or 3. caused data corruption when used with too high
sector counts. The usual work arround was to limit the I/O size using
a certain filesystem parameter.

	Kind regards

-- 
Matthias Scheler                                  http://scheler.de/~matthias/