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Level 1

38 points

How to add a partition of Sierra to my mid-2015 MBP running High Sierra?

How can I add a partition of Sierra to my mid-2015 MBP running High Sierra?

best

elmer

MacBook Pro

Posted on Aug 21, 2019 3:06 PM

Top-ranking reply

Level 10

361,855 points

Posted on Aug 21, 2019 3:30 PM

Make a current backup of your current system.

Use Disk Utility to create a second partition on the disk drive.

You will need a copy of the Sierra installer - How to upgrade to macOS Sierra.

Install Sierra on the newly made partition.

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