With regard to the 4G limitations of the file system, I found the following link diggin deep in LinuxQuestions:
And here's the beaut...
dd conv=noerror if=/dev/hda | split -b 100000000 - /mnt/space/LTRecover.img
So, this command ran for about 4 hours and moved 30 gigs to the partition space on DADSBOX.
I then swapped the hard drive, reloaded Knoppix, opened a console window, changed to root, created the mount point, mounted space on DADSBOX, and imaged the entire thing back to the new hard drive, reassembling the files as I went:
cat /mnt/space/LTRecover.img.* | dd of=/dev/hda