Run macOS Big Sur from an external HD for faster results
Apr 22, 2021
2 minutes
Disk Utility
Developer Apple Inc
Difficulty
Time needed
Mac speed issues are usually resolved by stuffing in more memory, but what if you have reached the limit or own one of the late 2015 21.5-inch Retina 4K iMacs that cannot be upgraded? The solution could be to run your Mac from an external hard drive.
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