Well I think I mentioned I don't have experience mounting hard drives in Linux, only USB thumb drives which is usually no problem. I can say that there are several other members here that can help if they read this.
If you are going to use Ubuntu for a while, you could go to
Ubuntu Forums
I am a member there and everyone is helpful there. Mean time, you will get probably most everything you need Ubuntu/Linux wise right here in this subforum. I am just letting you know that I know about needing to mount the hard drive, I just dont have any experience with it.