Glyph BlackBox Mobile 1TB Portable External Hard Drive with USB 3.0 Connection - Compatible with Mac OS X, Windows, USB 2.0, Time Machine

all right so I'm going to show you how you can format your external hard drive so it'll work on the Windows computer as well as a MacBook so I'm on my Mac computer here first thing you want to do is go down here to find her make sure your external hard drive is plugged in and you can see the devices here I have Seagate right here now if I just click on this down here and I go to get info I can clearly see that this hard drive is has a file system with Mac OS extended however if you have a new hard drive it's probably going to be formatted in NTFS we're basically only windows can write to it okay the Mac machines or the Mac books will only be able to read it they won't be able to write to it okay so first thing to do is go up to the magnifying glass in the top right hand corner and then type in Disk Utility enter and then look under external here you can see I have C gage with two of the