So I recently purchased a Macbook Air and an external HD and wanted to transfer my iTunes library to the external HD. I have my library on 3 discs and can restore everything except for 1 episode of House (ironically called Epic Fail lol.) Anyways, when I go to transfer it to my library I get a message "Attempting to copy to the disk "External HD" failed. The disk could not be read from or written to." But I only get it for just this one file. Anything I can do to fix this?