To make sure Sierra has no troubles installing and works fine after, you need to get rid of system junk on your Mac first. If you're going to perform a clean install on the startup drive, you need to backup your data, create a bootable copy of the installer, and, finally, boot from the bootable installer.

Backup your Mac to ensure your personal data is intact.Ĭlean Install macOS Sierra on Your Mac’s Startup Drive.

But if you plan to clean install on a non-startup drive (you have and extra HDD or SSD on your Mac), you don't need the USB. This flash drive is only needed for a clean install on your Mac’s startup drive.

Take a 16GB or larger USB flash drive to create a bootable Sierra installer.

Quit macOS Sierra Installer app without performing the installation. Once the download completes, it will automatically launch.

Download macOS Sierra Installer from the Mac App Store.Then, you should prepare your Mac for the installation: But, if you like an idea of giving your Mac a fresh start with a new macOS and nothing else, a clean install is the right option for you.Īlso, in case you’ve noticed that with time your Mac is running slower, it has unusual startup or shutdown issues and crashes, a clean install may be a good way to get back the speed and fix the problem.įirst of all, make sure that your Mac is able to run MacOS Sierra. It saves all your personal files, apps and user data, while a so-called clean install of Sierra will erase all data on the startup drive and replace it with a clean copy of OS. Note, that getting an upgrade is the easiest way of installing the new macOS. LEARN MORE: How to Clean Install the macOS High Sierra?

Download the latest versions of the best Mac apps at safe and trusted MacUpdate. It has plenty of new features, and also has the same easy clean install and upgrade flow as did the previous OS.ĪppCleaner 3.5 - Uninstall your apps easily. MacOS Sierra is a fantastic update arriving from Apple to make us love our Macs even more. AweCleaner is the most comprehensive Mac cleaner you can find on the market. No.1 Mac cleaner for macOS 10.12 Sierra – AweCleaner for Mac. Top 5 Mac cleaning software for macOS 10.12 Sierra. These are the best Mac cleaning software for macOS 10.12 Sierra that will enable you to evacuate all undesirable applications and documents right away.One of the most reputable Mac cleaner which helps you manages your space.

Best cleaner for mac sierra