Hello all. Please excuse my almost total lack of computing expertise or even using the correct words, but I could certainly use people's help here! The situation is that I have come to acquire a Macbook Air but the external hard drive I have been using up til now (a Samsung M3 Portable 2TB) seems not particularly compatible (I have since learned of different formats or file systems etc, the file system that my hard drive uses being NTFS, and this apparently not being compatible with Macs). I hear that HFS+ seems to be the file system of choice for Macs, and that re-formatting my hard drive to this system might be the way to go. My question is thus- if I transfer all my files off my external hard drive onto my old (barely functioning!) windows laptop and then re-format my external hard drive to HFS+ or whatever, will I even be able to transfer my files back onto the hard drive now it uses a different file system to the old laptop? I apologise for my lack of knowledge on all this but that is why I am here. Also, if this is something that is already talked about at length elsewhere, feel free to simply link me to it. Much thanks in advance.