![partition external hard drive mac backup partition external hard drive mac backup](https://www.acronis.com/sites/default/files/inline_images/time-machine-backup-min.jpg)
Your Mac comes with Time Machine, Apple's built-in backup feature. Under "Security Options" make sure to set the drive to write over past data three times or more.
PARTITION EXTERNAL HARD DRIVE MAC BACKUP WINDOWS
ExFAT allows you to use Windows volumes over 32 GB.MS-DOS (FAT) allows you to use Windows volumes of 32 GB or less.
PARTITION EXTERNAL HARD DRIVE MAC BACKUP MAC OS
![partition external hard drive mac backup partition external hard drive mac backup](https://www.softwarehow.com/wp-content/uploads/time-machine-select-backup-disk.png)
Choosing an External Drive: Solid-State Drive (SSD) or Hard Disk Drive (HDD)