how do i backup my mac to an external hard drive

On the new Mac, set Time Machine to use the same backup drive as before.Machine will tell you, “backup items cannot be modified.” You may run out of space and have to remove That’s great if you plan toĬontinue using both Macs but it’s not convenient if you intend to sell Old backup set intact and starts a new set. Instead, if you create a new backup Time Machine leaves the Up, Time Machine will seamlessly remove the old Mac’s backups to make Inheriting a backup allows the user to easily restore filesįrom the previous computer’s backup even if they weren’t on the computer It always copies everything from the new Mac to the backup. Note that even if you choose to inherit theīackup, Time Machine cannot pick up where it left off and copy only new files. The first backup Time Machine may ask if you want to inherit the backup If you used Migration Assistant to set up the new Mac, at Time Machine, you can set it to use the same backup drive as the old MacĪs long as there’s enough room for both computers’ backups. When you replace a Mac that was previously backed up with Inheriting a backup versus creating a new backup These advanced techniques that put you in charge of what happens behind Time Machine works so well it doesn’t always get much attention.īut if you need to replace computers or hard drives, you’ll appreciate When the backup drive is full it automatically deletes the oldest backups. It keeps older revisions and deleted documents so it can restore them or an entire computer to any point in the past. Time Machine makes hourly snapshots of files and copies them to a backup drive. Time Machine is Apple’s built-in, set-it-and-forget-it backup system.

How do i backup my mac to an external hard drive