The 'format' of your disk would need to support moving a USB Disk (like this one) from computer to another.
My disk was preformatted but you could change it if needed. For all practical purposes - using the normal (current) Windows 10 OS (on all computers) and current (or relatively recent computer hardware), you would not have any problem. You can access files at any time provided that the hard disk is pluuged into the USB port, and that your Operating System supports it. To some extent - hard disk access depends upon the operating system (MS, Apple, or Linux), as well as the computer hardware. Sorry for making this a little complex, but here is a little bit more information. And this is a great disk and price for this drive at Best Buy. Yes - this hard disk plugs into a USB port, and you connect the USB port to your computer.
