HT201250: Use Time Machine to back up or restore your Mac
Learn about Use Time Machine to back up or restore your MacQ: I setup Time Machine to back up to a 2TB Time Capsule. Why do I have 100GB of backups on my MacBook harddrive and how do I delete ... I setup Time Machine to back up to a 2TB Time Capsule. Why do I have 100GB of backups on my MacBook harddrive and how do I delete them? more
-
All replies
-
Helpful answers
-
Jan 22, 2016 7:37 AM in response to benfromla grange parkby dwb,Since your computer might be far from your backup drive when a scheduled TimeMachine backup is needed, the OS will make a snapshot on your startup drive instead. Later when you connect to your TimeMachine backup these snapshots will be consolidated in TimeMachine. The operating system is ‘smart’ about these back files. When you need the space for applications or data older backups on the computer will be automatically erased.
See this article for more information: About Time Machine local snapshots - Apple Support

