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You’ll have to pick Mac OS Extended first.

You’ll need to pick Mac OS Extended (Journaled) the first time you format.īecause your Mac needs to change the Windows PC format of a NTFS drive to a Mac file format first.Įven if you want your backup disk in APFS format. When your drive is an NTFS formatted drive.

The age of your Mac and the operating system your Mac is running. Or Mac OS Extended (Journaled) file system.Īnd which you pick depends on the current format of your drive. In the Format field you can pick APFS ( Apple File System). Pick APFS Or Mac OS Extended File System. Pick something that makes it easy for you to know this is your Apple Time Machine drive.