Okay, so I messed up a little...

I just built up a new fandangled pc last night and swapped a sata disk from my original pc into it, however, the new pc didn't recognise it (i'm thinking different sata controller?) and the nice nvidia media shield popped up to config it...it was 1am and I wasn't thinking and end result is I initialised the disk for the new pc. I didn't format or partition it but...now I obviously can't see the data on it on either pc.

So, can I easily recover the data on the disk or not? I have DVD backups of the important stuff on it but I will lose some recently saved data if I don't recover it like an Aussie trip and some party memories :(

Any help would be smashing