I'm currently trying to install qnx on a CF card by booting a PC (Dell Optiplex 755) from the CD and using the install 
from there. When I get to the point to choose a disk to install to, the only disk that shows up is the hard drive of the
 PC. I know the CF disk is bootable from the BIOS since it is one of the options when I choose to boot from CD. I'm 
using a USB CF reader if that matters as well.

I've seen in a few places that disabling DMA should help but pressing 'D' has not done anything, I'm not even sure that 
the keypress is being recognized.

I'd be happy to supply any more information that could help, I've been stuck on this problem for a few days now and 
would love to actually get started.