CF Ram Reg EWF "Incorrect function"

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Maybe a solution for some, more than a question.

My configuration:
- Primary IDE
-- Master: harddisk (temporary)
-- Slave: CD-ROM drive (temporary)
- Secondary IDE:
-- Master: CF (set to non-removable)
- Floppy: drive connected (temporary), no disk present.

The final configuration will only have the CF; no HD, CD or floppy.
There's no support for Floppy or CD-ROM in the XPe target.


I let FBA run on harddisk, made the registry changes as per the docs,
rebooted: "ewfmgr c:" showed a working RAM REG EWF.

Then I copied everything from HD to CF, disconnected the HD, and rebooted
from CF. "ewfmgr C:" now said "Incorrect function".

I rebooted once more to be sure, checked the registry settings (all still
OK), but it still said "Incorrect function".

Then I disconnected the CD-ROM and floppy drives and tried once more: EWF
was now working.


There was a CD in the drive, but there's no CD-ROM support in the target,
nor floppy disk support, yet somehow one of these still interfered with
EWF.
I suspect it's the CD, and that the problem will disappear if it is
connected after the CF in the PM-PS-SM-SS sequence (as secondary slave for
example).

For this target I only need the CF, but I can imagine that it would cause
problems iif I had needed the CD-ROM too: the hardware only allows me to
connect drives to the primary channel, and the CF is fixed as secondary
master (on the mainboard).

.

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