Copying On External To Another External

HERE IS MY PROBLEM...

I have a G_TECH external 500 that is not being acknowledged on the hard drive (I see it on Disc Utility but cannot access anything on it and it will not show up in my finder)

I tried to click Repair Dick but it shows this message in red:

keys out of order

I then tried to verify it (granted I really do not know what repair or verify would do ...) and it said it was unable to read it.

I assume (but could be wrong) that since I can see that my hard drive exists in disc utility there IS a way to take the contents from that disc and save them to a different external.

I have a WD passport and would like to drop the contents of the G-tech onto the WD so i can then wipe the G-Tech and fix it ...

This is what I am guessing is the correct thing to do however I do not know how to do it or if it is correct, If anyone can help me I would appreciate it.

Thank You