A drive and a partition: How to understand the difference when erasing Mac disks

When you want to format a hard drive, it helps to know the difference between a partition and a drive.
Seagate hard drive
Seagate
    Related:
  • Mac
  • Hard Drives
  • Solid-State Drives
  • MacOS Sierra
Glenn Fleishman’s most recent books include Take Control of iOS & iPadOS Privacy and Security, Second Edition (covering iOS 15/iPadOS 15), Take Control of Your M-Series Mac, and Take Control of Securing Your Mac. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.