Reading ESDI disks

Chuck Guzis cclist at
Thu Feb 11 11:36:38 CST 2021

On 2/11/21 9:25 AM, Mattis Lind via cctalk wrote:
> What is the best way of dumping the contents of an ESDI disk?
> I have an original IBM Enhanced ESDI ISA controller board. Could that be
> used under Linux? Or NetBSD/FreeNSD? I googled but didn't find much.
> Is there any other way of dumping the disk contents?
> In theory it should be just a matter of clocking the raw data and finding
> the marks and extracting the data. Has anyone done something similar?

I'm a little confused on this.  An ESDI drive, in my experience, behaves
exactly like an ATA one, right down to the command set.   ESDI drives
can be soft-or-hard sectored.

What am I missing?


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