To prepare the second drive, use Disk Utility to format it Mac OS Extended (journaled) with a GUID partition: They Mac will read almost any filesystem format from Windows so it should not be a problem. If that is the question then the answer is yes. You want to transfer the files from the first drive to the second one using the Mac and you want to know if it will work. You have purchased a second external disk drive to use on the Mac. You have an external disk drive on your PC that has photos and other files on it. I'm not quite sure I understand your question so I will paraphrase it so you can confirm we are on the same wavelength. Congratulations on your new puchase and welcome to the Apple Support Communities.