The README file to binary file for the Tungsten T|T says the following:
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HOWTO:

!!! DO NOT USE SD - THEY MOSTLY DONT WORK !!!
!!! (even though they might, but untested) !!!

1) make these 2 parts on your card
a) vfat
b) ext2
(use cfdisk, mkfs.vfat, mkfs.ext2)
2) copy files from part1-vfat to vfat; files
from part2-ext2 to ext2
3) boot and enjoy :-)j
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If I'm not suppose to us an SD card, what card are they talking about in #1 to partition? The only card I know for a Tungsten T|T is an SD card.

Thanks.