Sorry for being so late, busy week...
After you installed rootsh, open X-Terminal application. After each line of code hit the enter button.
Become root by typing either or To be sure nothing is mounted type Note: This is spelled MMCBLK0P1 but each letter is written small, also note: there might be an error, which is however fine.

After being sure the partition is not mounted, perform the actual file-system check by typing If strange output arises new questions feel free to ask here.

If no further errors occur, mount the partition Hope it helps!