this is the output i get when i try to mount or umount it, via xterminal

~ $ sudo umount /dev/mmcblk0p1
umount: can't umount /dev/mmcblk0p1: Invalid argument
~ $ sudo mount /dev/mmcblk0p1 /home/user/MyDocs
mount: mounting /dev/mmcblk0p1 on /home/user/MyDocs failed: Invalid argument
~ $