Macos – How to archive old time machine backups

macostime-machine

I have an external drive with an old mac's time machine backups on it. It takes up about 80% of the hard drive.

What i would like to do is just take the final snapshot that it took of the old mac in order to have at least an archive of it and remove all the incremental backups, so i can use the hard drive for a time machine for my new mac.

How can I go about doing this?

Best Answer

Time Machine stores its backups as plain files and folders. All you need to do is go into Backups.backupdb/yourComputerName/ and you'll be presented with a set of folders named in yyyy-mm-dd-hhmmss format. Simply locate the most recent (or sort them - the most recent will be at the bottom, thanks to its name) and copy it elsewhere. You can then delete the Backups.backupdb folder or wipe the entire drive as you wish.

Alternatively, if you want to copy stuff from your old Mac to your new Mac, you should be given the option to restore from another Time Machine backup when Setup Assistant comes up on the first start up after a clean install (if you've already set up your new Mac, you can also do this after the fact with Migration Assistant in /Application/Utilities/). After it's done that, it'll give you the option of re-using the Time Machine backup as the Time Machine location for your new Mac, so all the history will still be there, and will be gradually deleted once your external disk fills up.

Related Question