I have a digital camera that I use with an IBM 1GB microdrive and it
works at over Truckee. I was also able to record .avi movies on the
drive at altitude.

There may be a problem with the 20 GB drive operating at altitude, at

least at the altitudes we fly in the Sierras. I seem to remember that
I
didn't buy a 1GB drive for my camera a couple of years ago as the
specs
indicated it wouldn't work at higher altitudes.

mg