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How To Do A macOS Sierra Clean Install On Your Mac

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macOS Sierra Clean Install

Apple has just released its newest Mac operating system, the macOS Sierra. The new update boasts complete integration with Apple?s digital assistant Siri as well as other new and exciting features.?Although quite unheard of, doing a macOS Sierra clean install on a Mac is actually pretty easy.

Software updates are quiet important in keeping one?s computer in tip-top shape. With every upgrade comes new features and functions as well as increased security.

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For Mac users, getting OS upgrade is as easy as opening the App Store and downloading the newest available operating system, in this case, the macOS Sierra. After the downloading, running the upgrade software only takes a few minutes to finish.

This is well and good. However, every now and then, one might opt to do a fresh install of the operating system. The reason for this varies from user to user but predominantly based on overall performance.

Performing clean OS install can solve some computer performance issues that have accumulated over years of use. These issues are mostly caused by driver updates, dodgy installation, and unstable applications. A clean install can also recover lost storage space caused by third-party applications.

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Before doing a fresh install, it is recommended that users back up their system by any means. This could be with Apple?s Time Machine or some third-party apps like Carbon Copy Cloner. Users also need to check compatibility with the new upgrade. Visiting Apple?s website before the install will not go amiss.

Another item that an upgrader will need is a USB drive, preferably 8GB or more. A fast and stable internet connection is also a must.

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To start the installation process, download the latest OS from the App Store. Once done, create a bootable USB installer by following the instructions below.

    1. Insert the USB drive to an empty USB port.
    2. Run Disk Utility. From here, we will erase the USB drive.
    3. Be sure to name the USB drive to ?Untitled?. Choose the format ?OSX Extended (Journaled). Then click ?Erase?.
    4. Once done, bring up the Terminal App. You can find this in Applications->Utilities
    5. From the terminal, paste the following commands: sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia –volume /Volumes/Untitled –applicationpath /Applications/Install\ macOS\ Sierra.app –nointeraction
    6. Press enter. The Terminal App will ask for the administrator password. Once entered, it will resume the operation which will take a few minutes.
    7. Once done, close all the windows and shutdown the computer.

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After creating the bootable USB drive, the next step is now to install the macOS Sierra. To install macOS Sierra, follow the succeeding instructions.

  1. With the USB still plugged to the port and the computer on shutdown, press the power button to turn it on. While it is booting, you need to press the Option button as well until you hear the reboot tune.
  2. You will then be offered a few options on where to boot your Mac. From here, choose the ?Install macOS Sierra? option.
  3. Once the USB drive has booted, you will then need to erase your Mac?s main HDD. To do this, select ?Disk Utility? from the Utilities Window.
  4. Select your Mac?s HDD and click ?Erase?.
  5. Once done, go back to the installation window and select ?Install macOS Sierra?.
  6. Follow the on-screen prompts to finish the installation. The installation process will take a few minutes to complete. Once done, you now have a freshly installed OS on your Mac.

After the installation, you can then proceed in restoring all your files to your Mac. You can use the Migration Assistant application for this which can be found in Applications->Utilities.

For more how-tos, be sure to check us out at TheBitBag.

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