I am about to stick a gun in my ear over this, I have for hours been trying to figure out the how to partition a front end machine.

new 160 gig wd drive. Ran through the basic set up and got the /dev/sda error so I read through the forums, everyone said do a manual partition so I did that with multiple partitions as instructed but am constantly confronted with a no root found error. I am a wiz with mac and PC but this has got me stumped dead.

How the hell do you correctly partition a drive for mythbuntu?