Tip: Here recommend a powerful tool named iMyMac PowerMyMac to remove the purgeable space on Mac so that you will have more space to upgrade the macOS High Sierra. I know this space is a lot but once you did the upgrade to macOS High Sierra, you’ll get more free space because of the new Apple File System and HEVC which is a new encoding standard for videos. How much disk space does macOS use? In order to run High Sierra on your Mac, you will need at least 8 GB of available disk space. However, if you are unsure which mac os version you’re using, you can find it by going to the device information of your Mac, to do this, open the Apple menu and click on ‘ About this Mac’. All Mac models and devices from 2009 like Mac Book, iMac, and Mac Book Retina and 2010 models such as Mac Mini, Mac Pro, Mac Book Air, and Mac Book Pro are compatible with the MacOS High Sierra. If your Mac has been running on macOS 10.12 well it should also run smoothly with macOS 10.13 High Sierra without any issues at all. How Much Space Does MacOS High Sierra Take? How to Upgrade to Mac OS High Sierra? Part 4. How Much Space Does MacOS High Sierra Take? Part 2. Once you do the upgrade to macOS High Sierra, you’ll get more free disk space because of the new Apple File System and HEVC which is a new encoding standard for videos.Īrticle Guide Part 1. In order to run High Sierra on Mac, you will need at least 8 GB of available disk space. How Much Space Does macOS High Sierra Take?