On Tue, 2 Nov 2010, Chuck Guzis wrote:
On 1 Nov 2010 at 17:53, Steven Hirsch wrote:
I don't know what 'DDO' is,
unfortunately.
Dynamic Drive Overlay. A way of dealing with drives larger than
supported by the BIOS. Basically, enhanced BIOS support for the
drive was written as a boot record on the first track, which would
then be "hidden" to normal applications. SpeedStor was one such
package; there were others, such as Ontrack Disk Manager.
Thanks. I dug out a copy of Disk Manager and setup the drive with that.
Unfortunately, Spinrite crashed about 25% through and hung the computer.
I've never seen that one before! Just started again.
However, the easiest way was to use a controller with
its own BIOS.
CMS, WD and SMS made them. Note that there is nothing in the MFM
controller itself that prevents accessing cylinders past 1023.
Do you know which models? I have a pile of WD controllers and don't
believe any of them have a translation mode.
I've offered you a driver for cylinders 1024-1223
that I used on a
big Priam hard drive with 16 heads if you'd just like to see if your
drive works.
That's very kind of you. Was that in e-mail? I haven't received anything
from you.
Steve
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