How to do a clean install of MacOS Sierra

Mac OS X 10.11 called MacOS Sierra has just been released in Beta version. User are not able to upgrade yet. However, if you want to start fresh or you want to install MacOS Sierra into an independent partition, the best solution is do a  clean installation, erasing the hard disk and installing from scratch.

How to Clean Install MacOS Sierra on a Mac

Download MacOS Sierra

It’s able to download the latest Sierra from this topic.

Create a Bootable Sierra USB

This topic gives you the instruction to do

Installing MacOS Sierra

Once the bootable USB drive has been created, we are ready to perform a clean El Capitan stall.

Step 1: Restart your Mac and hold down the Option key immediately. When your machine boots up, choose the Bootable Sierra USB drive, and then OS X Utilities window will be displayed.

MacOS Utility

Step 2: Choose “Disk Utility”, then select the main hard drive or the particular partition to format by click on “Erase” button. This process will erase all data existing on the Hard drive or the partition.

Erase the Hard drive

Step 3: Get back to the main menu to choose “Install OS X”, you then will be asked to choose the Hard drive when prompted and continue with the installation.

Start installing MacOS Sierra

From now, just follow the further steps to accomplish doing a clean install of MacOS Sierra.

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