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#Upgrade os x el capitan 10.11.6 to 10.12 how to#
#Upgrade os x el capitan 10.11.6 to 10.12 mac os x#

Let the “Restoring” process complete, this can take anywhere from 30 minutes to several hours, depending on the size of the hard disk, the size of the backup, the speed of the computer, and the speed of the backup drive.Confirm that you wish to erase the target drive (“Macintosh HD” or otherwise) and restore it from the chosen Time Machine backup – this is irreversible, the drive will be formatted and erased and restored from the backup – click on “Continue”.Optional: if FileVault is enabled, click on “Unlock” and authenticate to disable FileVault encryption before you can use the Restore function.At “Select a Destination”, choose the destination Mac drive to restore to, typically this is “Macintosh HD” then click on “Restore”.

#Upgrade os x el capitan 10.11.6 to 10.12 mac os x#

At “Select a Backup”, navigate through the backups listed by date, time, and Mac OS version, choosing the most recent date with “10.11.6” (or whatever your prior Mac OS X release was) and click on Continue.

At the “Select a Backup Source” screen, choose your Time machine backup drive.

At the “macOS Utilities” screen, choose “Restore From Time Machine Backup” and then click Continue.

Reboot the Mac and hold down Command+R keys together to boot into Recovery Mode.

Connect the Time Machine volume to the Mac.

#Upgrade os x el capitan 10.11.6 to 10.12 how to#

How to Downgrade from macOS Sierra with Time Machine If you skip that, you’ll lose the interim data. I personally get around this by creating a folder on the Time Machine volume and manually dragging and dropping important new documents into it, then just copy them back over to the restored Mac, but some users rely on iCloud Drive, DropBox, or other services. * Remember, a side effect of rolling back with Time Machine is that any interim data will be missing unless you manually back up the files yourself before beginning the process (for example, if you restored from January 1 but it’s now January 15, you would lose files created or modified between those two dates unless you manually back them up before the restore).

A manual backup (separate from Time Machine) of any interim documents or data created between the time of the Time Machine backup and now*.

Time Machine backup made prior to updating to macOS Sierra (either with Mac OS X El Capitan, Mavericks, Yosemite, or otherwise).

Requirements to downgrade from macOS Sierra to prior Mac OS X The ability to prevent data loss, or roll back problematic software updates or OS upgrades is invaluable. This obviously requires a functioning Time Machine backup to work, one of of many reasons why setting up Time Machine on a sufficiently large external drive is one of the most important maintenance routines you can have on a Mac.