said by NormanS:Shared drive, read-only attribute set?
That may be the problem, but I don't recall that box was checked on the files I tried to copy to the C drive. I tried to take ownership of the drive (it was from another computer prior to the W8 install), but nothing I could do would let me copy files from it to the root directory of the C drive.
The solution I came up with was very inelegant, but it worked. I copied all the files off of it onto a thumb drive (32GB).
Then wiped the drive that is to go in the Windows 8 build, then formatted it on the W8 machine. Then copied all the files from the thumb drive to the new W8 drive. Now I can copy files from that data drive to any location on the W8 machine.
The problem is that I like to have a shared removable data drive for backups from several computers. Don't know how that is going to work out with W8.