Possible Duplicate:
Unknown filesystem error: grub rescue
I have a dual o.s linux(ubuntu 11.10) and windows 7.I have a problem in grub.I had done a mistake.In windows there is a option called disk management there i have deleted one of my partition and renamed it as M drive previously it was G drive. when i switch of the laptop and turned it on it is showing an error grub rescue error : unknown file system.please do help me i am struggling with this problem. please.i dont know what to do
