Hi, someone knows how can I boot my OS or cdrom from a Grub Minimal_Bash? 
sorry, I�m a dummy
I explain, when I start loading the OS, I get errors, and ends up in the grub bash. This is the minimal_bash and I have no idea of any command. It tells me "unknow partition". The problem is that I have to recover it from this grub bash because it is an encrypted and hidden partition of truecrypt 7.1a. That's why I do not have the option to do anything before pass the truecrypt auth. and then I get only this minimal_bash. Any idea? I hope to have explained myself well.
It's something like this (it's not my image):
Thanks all.