Portable hard drive
I decided a while ago to get rid of my laptop and get a Mac mini. I transferred all of my photos and documents onto a portable hard drive. I connected the hard drive to my Mac mini and I can see all the photos and files on it, I can also transfer files off the hard drive onto the Mac. However I can’t add anything to the hard drive. So I guess I need to reformat the hard drive. But, obviously, in doing that it will delete everything. My question is if I put all of my data back onto a computer and then reformat the hard drive for the Mac, will I be able to put all of my data back onto the hard drive again?
thank you in advance for any help. I really am not good at all this technical stuff.