I DON'T want to unmount the internal drive- That's why I want to check that before I go ahead. I posted up a page or 2 back that somehow I must have mounted something I wasn't supposed to when copying from my sd card to internal emmc. I think that is why my /home says it is full on DiskUsage app and app manager won't let me update anything, even though when I look in Midnight Commander it says there is space in there. The conclusion I came to was that I left something mounted that was not supposed to be mounted- but I don't have the skills or knowledge to know what- so that is why I am checking.

Any ideas?