You do not need to reformat it!!!
You can use MAC drive on PC via USB but you need proper driver installed to support it.
try for example
macdrive_7.2.2 it works fine. I didn't test it on Vista but on XP64 works perfectly
Thanks for the suggestion, dji
But I checked. Macdrive costs $50. I only paid $89 for the drive I'm trying to reuse. Not a good value proposition in my opinion.
Plus I don't mind reformatting since all data has been transferred to the new Mac 1TB drive. In fact, reformatting is preferred since this drive will live the rest of its life on my Windows PC. I do not anticipate any future Mac/PC drive swapping with this drive
What I think I really need is either:
A way to reformat the drive to NTFS on the Mac (I understand FAT32 has a 4GB file size limit)
Get the Windows PC to recognize the existence of the USB drive so I could reformat it on the PC.
Any ideas? Can I use Macdrive free trial to get the drive recognized on the PC, and then reformat to NTFS?