11 Feb
2021
11 Feb
'21
9:40 a.m.
Doesn't ATA transfer the data in parallel?? ESDI uses the same two
connectors as MFM (20/36 IIRC) , and transfers the data serially.? The
difference between MFM and ESDI is that MFM transfers the raw analogue
data over the cable but ESDI transfers digital serial data.
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591 nw.johnson at ieee.org
On 2021-02-11 12:36 p.m., Chuck Guzis via cctalk wrote:
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?
--Chuck