HARD DRIVE issue...PLEASE HELP

HI

I am new to the Mac world but I wonder if anyone has had the same issue and could tell me how to rectify it?

I have two hard drives on my Mac Book Pro. The main operating hard drive works fine. However the second hard drive will not copy data to another drive and I get the following errer message:

"The Finder can’t complete the operation because some data in “………………” can’t be read or written.
(Error code -36)"

I have re formattee the drive three or four times and no matter what type of system I reformat to I get the same message.

Is it a MacBook issue or is this a Mac issue or is there a fault with the Hard Drive itself?

Can anyone Please tell me in simple terms what to do to rectify this ??

Many thanks