All of a sudden I turn on my laptop and get this:

” error: unkown filesystem.
grub rescue> ”

Rather urgent. Actually VERY urgent. Need to fix this immediately. I don’t have an Ubuntu Live CD, as I installed my OS via pen drive.
Please any help and suggestions are highly welcome, only I ask you to speak to me as if speaking to an intermediate user. I’ve managed to fix many things, but this…I haven’t a clue.

Topics: filesystem, Ubuntu, USB, external hard drive, grub, error, urgent, booting, booting error