6 Ways to Safely Delete Old Time Machine Backups on a Mac

Quick Overview of the 6 Backup Deletion Methods

Part 1. Why You Should Not Drag Backups Straight to the Trash

When you want to delete some unwanted files from a Mac, your first idea might be to directly drag them to the Trash. However, when it comes to removing old Time Machine backups, do not do this.

You should know that Time Machine does not store files like a standard folder system. Instead, it uses a much more complex system. If you choose to move Time Machine backups to the Trash and attempt to empty trash on Mac, macOS will struggle to process them because these backups often contain millions of linked system permissions.

In most cases, your operation will cause the Trash to freeze when emptying. What’s more, it may potentially corrupt the remaining index of your backup drive. That’s why many Mac users are looking for a safe way to erase a Time Machine backup, rather than directly drag it to the Trash.

Part 2. Learn 6 Methods to Delete Time Machine Backups

So, what is the safe way to purge old backup files without damaging your drive or causing system errors? Here are the six efficient methods to do it correctly.

Method 1: The Official Way: Using the Time Machine Interface

Apple offers a standard way to remove backups from Time Machine. If you only want to free up your Mac space and erase the backup history of a specific file or folder, you should start with this built-in method.

Note that if you are using a newer macOS version that runs APFS, you may not use this method to delete Time Machine backups.

Method 2: The Fast Way: Using Finder (With Strict Warnings)

If your Mac runs an older macOS and you don’t mind erasing the entire backup date folders, you can choose to remove these Time Machine backups via Finder.

Method 3: The Advanced Way: Using Terminal Command

If you are comfortable with command-line interfaces, you can rely on the Terminal to delete Time Machine backups. This is often the most efficient way to do that.

Method 4: Aiseesoft Mac Cleaner

If you don’t want to use these Terminal commands and prefer a cleaner removal process, turn to a dedicated Mac data optimization software like Aiseesoft Mac Cleaner. It provides a straightforward way to remove Time Machine backups and other old, unnecessary files. It can easily locate large, useless data for you to free up Mac storage.

Method 5: Disk Utility (Formatting the Whole Drive)

If you want to erase all the historical data on your Time Machine backups, especially when your backup drive is full, you can choose to format the whole drive. This gives you a fresh start for new backups.

Method 6: Deleting Local Snapshots

In addition to the Time Machine backup stored on your external drive, your Mac also saves “Local Snapshots” on the internal hard drive. If you meant to free up Mac space, you can delete them.

Open Terminal on your Mac and paste the command below:

tmutil listlocalsnapshots /

It allows you to view a list of local snapshots taking up space on your Mac.

To delete a specific snapshot by its timestamp:

sudo tmutil deletelocalsnapshots com.apple.TimeMachine.[date]

Part 3. FAQs on How to Delete Time Machine Backups

Conclusion

You can learn six helpful methods to delete Time Machine backups from this post. It does not have to be a frustrating experience for managing your Mac’s storage. If you only want to quickly get more available Mac space, turn to the reliable Mac Cleaner. It offers a simple way to find and erase old, large, and useless files on your Mac. Before confirming any deletion, you should double-check the selected data and dates.