type cd /mnt/sda1
if it does not exist then mkdir /mnt/sda1
that is now the empty mount point 4 your stick...
then you must mount it each reboot with mount /dev/sda1 /mnt/sda1
list now your usb stick content... if there is none go cd .. and go back into the dir /mnt/sda1

now it should work I am not folling this thread here, so send me an PM if needed....