mounting dev/dha1 on /home failed: no such device or address

When i mount the downloaded tor_vm.iso under virtual box following the below instructions

http://www.rootdamnit.eu/2011/12/10/virtualbox-tor-backtrack-aka-how-to-become-almost-invisible/

i get the error mounting dev/dha1 on /home failed: no such device or address

I have the iso mounted as sec ide master and have tried all manners to create a black virtual hdd as primary ide master but always with the above error

Thanks for taking the time and for the great work!!

Trac:
Username: robpal