I have this problem after damage I think hit the OS GNU GRUB version 1.99-21ubuntu3 Minimal bash-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device or file completions. I read the thread that was posted before but I don't have an ubuntu cd because I used "windows installer" ..... please don't tell me to uninstall it and install it again because I have important files and I don't want to lose. please help