On 2008-04-24 09:15 +0100, Simon Owen wrote:
> On Mon, Apr 21, 2008 at 9:39 PM, Andre Majorel <aym-xunil(a)teaser.fr> wrote:
> > The WD1770 and friends had a useful read track command,
> > apparently carried over from the 1791 :
> With normal sector commands, the address mark detector is
> enabled only when looking for header or data fields. With
> WD17xx read track it's enabled for the whole command, causing it
> to resync to bit sequences found elsewhere on the disk (header,
> data or gaps).
> Read track is good for poking a bit deeper, but it's useless for
> doing byte-level dumping of tracks. Try it on track 41 of any
> disk and you'll see it trip up when it hits the track number in
> the first header field!
I wasn't aware of that ! Thanks.
André Majorel <URL:http://www.teaser.fr/~amajorel/>
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