HD Install :: linux n00b does it again...

I was preparing my HDD for a 'frugal' install.
I used 'fdisk' to delete all existing partitions and to add a new linux partition.
I then rebooted (I think I was supposed to add a file system to the partition before doing this?)
Now I can't see /dev/hda when I type 'mount' in the terminal.
Can someone please help me out? Is there a linux command that can help me?

Cheers

*EDIT*
Fixed it. I didn't realise that I could still call /dev/hdb with fdisk even though it wasn't showing up with 'mount'. Duh! I'm such a n00b.

what does the following command : sudo fdisk -l

give you?

original here.