By the way LTman, I reformatted my SD Card using Vista, but couldn't partition it. I tried the formatted card on my N900 and checked to see if it was mounted. I saw it in the list generated by the code "mount" in xterminal. However, when I tried to unmount, I ended up at exactly the same spot: umount /dev/mmcblk1p1: Invalid argument.. Can someone please help me get past this?