And they will never cause any damage to your hard drive or shorten the service life of the hard drive/SSD/USB flash drive, etc. They will efficiently format hard drive or external device under Windows or Mac OS. Don't worry, the top 5 disk formatting tools below are 100% safe disk formatting tool for Windows or Mac OS. whether the formatting process takes very long time to complete 2 whether the formatting operation would cause damage or shorten the service life of the hard drive. When you format a hard drive, you may worry about two things: 1. Top 5 Disk Formatting Tool for Windows/Mac In this article, we will introduce 5 disk formatting tools for Windows and Mac to help you securely format hard drive/USB flash drive or memory card on a PC or a Mac. If you want to format a hard drive or USB flash drive on your computer, disk formatting tool is the best choice.