Backup your data – It’s always good practice to backup your Mac once in a while - or as they say, make a backup of your backups! Apple also recommends us to do that for major macOS upgrades, just in case. You can also read our detailed guide on the best Mac cleaner software.ģ. That’s the most effective solution I’ve found. How to clean? There are lots of manual things you can do, but I recommend using CleanMyMac to remove system junk and Gemini 2 to find large duplicates. Plus, it’ll take you less time to back up.
The more free space you have, the better. Clean up your Mac – Per Apple, High Sierra requires at least 14.3GB of storage space to perform the upgrade. Apple has a clear list of which Mac models are supported. Check your Mac model – Not all Macs, especially old ones, are able to upgrade. If you have decided to update to High Sierra but have yet to do so, here are a few things (based on the order of priority) I highly recommend you check out in advance so you can avoid potential problems.ġ.
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