Both Windows and Mac systems provide simple methods of removing everything off the hard drive. The most efficient method to ensure that all data has been removed involves a complete reinstallation of the operating system. If you don’t have the recovery disks, or can’t reinstall your operating system, you can delete everything manually. Manual deletion requires the creation of a new user account and removal of all your installed applications. However, it also prevents the need to use installation media, recovery partitions or online recovery options. Tips Warnings Writer Bio
