When a computer gets old or when you are handing it over, you must delete everything on the computer. As a matter of fact, it is important that you also securely wipe the computer so the files are not ...

To format a hard drive before you start using it in Windows, use the Disk Management utility; on a Mac, use Disk Utility.

How do I format a hard drive? A computer hard drive stores your files, allowing you to access them at any time. The majority of the time, you want these files to remain stored properly and safely.

You can format an SD card using Windows, Mac, and Android devices, and likely your digital camera too.