Read this Apple Support Discussions thread about backing up multiple onboard drives with Time Machine. Allow plenty of time for Time Machine to create the initial backups (for two drives expect an overnight process). Towards the bottom, the Format should be Mac OS Exended (Journaled)."Be sure when you are using Time Machine that your backup drive contains enough space to fit both of your internal drive backups (and is formatted correctly as described above).
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Select the line for the partition (indented, with the name). Towards the bottom, the Partition Map Scheme should be GUID for an Intel Mac, or Apple Partition Map for a PPC Mac. If it does appear in Disk Utility, select the top line, with the make and size. If it doesn't appear at all, does it appear in the sidebar of Disk Utility (in your Applications/Utilities folder)?
CNET BEST EXTERNAL HD FOR MAC TIME MACHINE BACKUP PLUS
Apple Support Discussions user "Pondini" suggests: "When you go to TM Preferences > Options, click the plus sign at the lower right, then your computer's name in the sidebar, does the 2nd internal appear at all? The Seagate Backup Plus Hub is faster than our main pick, making it the best option if you work directly from your external drive on more drive-intensive tasks. For more about using the drive with Time Machine, go here. Click the ‘Use as Backup Disk’ button if you want to use the drive with Time Machine. How do I designate TM to back-up both drives?" Solutionīy accessing your Time Machine preferences you can add a second drive to Time Machine's backup process. After the drive is reinitialized, you should automatically see the Time Machine dialog box. My internal drives are 230 GB and 500 GB respectively. This article will show you how.Īpple Support Discussions user "ProfWhiplash" asks: "I would like to back-up my two internal HDs using TM, but the preference do not allow me to select the other drive. The default settings of Time Machine do not make this option clear, but it is indeed possible. Buy G-Technology 4TB G-DRIVE USB-C (USB 3.
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Users with two internal drives in their Mac may want to use Time Machine to back up each drive.