Problem with recuva and my external disk

Hi,

I have format my external disk by mistake.

I have download Piriform Recura to undo my mistake.

The analyse of the disk found many files, sounds good.

But when I try to recover this files on my computer disk c: just few files are save, most of them cannot be save, even if there are excellent, the message, "the peripheric is not ready" appear. :blink:

I'm lost.

Does anyone can help me?

Tank you.