[Soekris] CF master or slave?

[David Zelinsky]

I recently bought two net4801's.  I installed Debian on a CompactFlash
card using a card reader on another computer, plugged the CF into the
net4801 and it booted first time, no problem.  Then I did the exact
same thing with another CF card and the second net4801, and it
wouldn't boot.

I eventually discovered that whereas the first box was seeing the CF
as the IDE Master (hda), the 2nd box was seeing it as the Slave (hdb).

Is there a way to change this, or is it soldered onto the board
differently?  Why would they make them different?  It's a nuisance
since I would like these boxes, and their CF cards, to be
interchangeable.

-David