OK, your thumb drive is not mounted.
you can compare the output of this ls with the stick attached and without, the device being added when you plug in the stick is the one you need to mount.
Where /dev/sda1 needs to be replaced by the device showing in /dev when you plug in your stick.
I am heading off to work now. Will take some hours before I can reply. You can also try to get help via IRC.
ls /dev/
you can compare the output of this ls with the stick attached and without, the device being added when you plug in the stick is the one you need to mount.
mount /dev/sda1 /mnt/usb
Where /dev/sda1 needs to be replaced by the device showing in /dev when you plug in your stick.
I am heading off to work now. Will take some hours before I can reply. You can also try to get help via IRC.