Quote: Originally Posted by toppergraph
is it the same as using a single partitioned HDD with with diferant op systems?
No it is much better as it leaves the HD's independent to come and go as you please.
Be sure to keep the other HD unplugged during install so that Windows doesn't configure it's own Dual Boot which interlocks the HD's.
Then when you reconnect both HD's, boot the preferred one via BIOS boot order, and select the other using one-time BIOS Boot Menu key which every computer and mobo has.