Way to look for duplicate files across two hard drives?

[EvilYoda]

So I started with 4 hard drives, 2x 500GB and 2x 1TB, all filled with old data that was saved from prior installations or whatever. It's down to the two 1TB drives and I thought I'd have more duplicates but at first glance I can't see much.

Is there some software I can use that will help me compare the two drives? The plan is to turn the old computer into a media server running two 2TB drives in RAID so I'll have to sit down and move this data over one way or another, but I was hoping that I wouldn't have to worry about the same file in two different places.

Long writeup for a short question, sorry. Thanks if you can help!

 

[mechBgon]

Glary Utilities's freeware has a dupe-finder feature, it might help somewhat: http://www.glarysoft.com/

 

[nickbits]

Winmerge. Mostly for text files but should spot all the differences.

 

[Gillbot]

AntiTwin

Small exe, works well so far for me.

 

[EvilYoda]

I'll give em a shot, thanks.

 

[Blazer7]

I use duplicate cleaner. It's free and easy to use.

http://www.digitalvolcano.co.uk/content/duplicate-cleaner