I am trying to copy a 220Gb single file to a usb drive connected to the wd book NAS drive over ssh (i.e. its not being copied over the network). It fails every time at 91.3Gb with cp: Read Error: Input/output error. I thought it was the usb drive, but the same thing happens if I try to copy to another directory on the mybook disk!
I have also tried rsync which is much slower.. gets to the end of the copy, and then says something about an error and starts again!
I have run fsck and can't find any problems. Any suggestions?