Has anyone done this? I tried by:

  formatting drive with QNX4 using the boot file extracted from instflop-rtkit.dat
  copying over the regular rtkit files, including rtinstall, boot/fs/*.ifs,*.qfs

The drive boots, but it does not get into the rtinstall script. I'm *guessing* it somehow isn't finding the USB drive 
after booting. Do I need to build a more carefully customized boot image?