How to make sure all data is erased on a computer hard drive

If your concerned with data being read or recovered from your hard drive after it is sold or given away, we recommend trying the following utilities. These utilities remove all your existing data and make it impossible to be recovered or read. After your data is erased or overwritten, you can then reinstall Windows or another operating system.

• How to format a hard drive, SSD, or USB flash drive.
• How to erase a hard drive and start over?