Files from Mac to PC

You can use a FireWire cable.

 

If both computers have Gigabit Ethernet, it will be the fastest way via file sharing.
If both computers have Firewire 800 or 400, though very unlikely with Windows PCs, you can use that via file sharing.
If you have a USB 2.0 HDD it will the simplest option, though not as fast as Gigabit Ethernet or Firewire.
Normal 10/100 Ethernet will take long, not as long as via wireless LAN.

 

External hard drive would take about 4 hours, you can do one transfer overnight, the next transfer then next night. You don't have to sit and wait

 

- Share CIFS on your Windows
- Mount on Mac
- run rsync for thr directories on the Mac

If it doesn't complete, continue the next day. It should pick up where it completed last time. A couple of runs should get all the files sync'ed up

 

Unless there's a glitch which can stop the entire process.