HT202380: Time Machine: How to transfer backups from a current backup drive to a new backup drive
Learn about Time Machine: How to transfer backups from a current backup drive to a new backup drive
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Helpful answers
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Jan 5, 2015 9:09 PM in response to Ginslpby FoxFifth,You should be able to use a drive that was previously used with a PC. You will likely need to reformat it. Note the following quote from Mac Basics: Time Machine backs up your Mac - Apple Support
Your Time Machine drive needs to be formatted as Mac OS X Extended (Journaled). If you select an NTFS or FAT-formatted drive, Time Machine prompts you to reformat the drive. Important: Reformatting erases any files on the destination drive. If you're not sure if you want to erase the drive you connected, choose a different drive.
The following gives instructions on how to reformat to Mac OS X Extended. It refers to Aperture but the instructions would be the same: Format external drives to Mac OS Extended before using with Aperture - Apple Support