It’s often not much more expensive to buy a 1 terabyte (1024 gigabyte) external hard drive than it is to buy a 500 gigabyte external hard drive, so consider spending the extra $20 or so to get more storage. You’ll generally want to buy an external hard drive that both has enough space for you and comes from a reliable manufacturer such as Western Digital or Seagate. If you don’t have an external hard drive, you can also use a CD, DVD, or USB flash drive. [2] X Expert Source Chiara CorsaroPhone & Computer Repair Technician Expert Interview. 18 October 2019. You may also try a cloud storage site, such as iCloud, Google Drive, or Dropbox. [3] X Expert Source Chiara CorsaroPhone & Computer Repair Technician Expert Interview. 18 October 2019.
Most modern Macs have USB-C (also known as Thunderbolt) ports rather than traditional USB 3. 0 ports. If this is the case for you, you may need to buy a USB 3. 0 to USB-C adapter for your Mac before you can attach your external hard drive.
Make sure to select Mac OS Extended (Journaled) as the File System value.
