How To Install Mac Os Sierra

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You can perform a clean installation of macOS Sierra to give your reckoner a fresh start. Unlike an upgrade, installing Sierra from scratch can iron out problems similar quirky drivers, sluggish performance, and unnecessary difficult drive bloat. Because a clean install will erase your hard drive, yous'll want to back up your data earlier yous brainstorm. Larn how to download the macOS Sierra installer, create a bootable installation disk, and make your Mac feel brand new over again.

1. 1

   Brand sure macOS Sierra tin can run on your Mac. Open the Apple tree carte and select "About this Mac." You lot should see something like "MacBook Pro (13-inch, Early 2022) just beneath the operating version number. The following Mac systems are compatible with Sierra:^[ane]

   • iMac (Late 2009 and newer)
   • MacBook Air (2010 and newer)
   • MacBook (Late 2009 and newer)
   • Mac Mini (2010 and newer)
   • MacBook Pro (2010 and newer)
   • Mac Pro (2010 and newer)

2. 2

   Become a USB bulldoze. Doing a clean install requires creating a bootable installation drive, and then yous'll need to have one ready. The bulldoze can be whatever sort of difficult drive (including a flash drive), and should take a minimum of 16GB of deejay space.^[2]

   • The drive will be erased and reformatted past the installer, so be sure to support your information.
   • It's okay if the drive is non formatted for macOS.

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3. iii

   Dorsum up your Mac. Doing a clean installation of macOS Sierra will wipe your hard drive. Use the backup method of your choice to preserve your personal files, such as photos and documents.

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1. 1

2. two

   Click on macOS Sierra. A file named InstallOS.dmg will download.

3. 3

   After the .dmg file has downloaded, open information technology, so click on InstallOS.pkg, and follow the onscreen instructions.

4. four

   You will detect the installer in the Applications binder.

5. 5

   Plug the USB drive to the computer. Y'all'll come across a hard bulldoze icon appear on the desktop when the bulldoze mounts.

6. 6

   Rename the USB drive. To make the bulldoze easier to work with, proper name it "bootdrive."

   • Right-click or Ctrl +click the drive icon.
   • Select "Rename."
   • Type bootdrive
   • Press ⏎ Return

7. 7

   Launch Applications > Utilities > Terminal.app. A blackness window with white text prompt will appear.

8. 8

   Copy the following control. Apply your mouse to highlight the post-obit (lengthy) command, and so press ⌘ Cmd+C to copy.

   • sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/bootdrive --applicationpath /Applications/Install\ macOS\ Sierra.app

9. ix

   Return to Terminal and press ⌘ Cmd+V . The long code you copied will appear after the prompt.

10. 10

    Hit ⏎ Return . At present you lot should come across "Password" on the next line in the terminal.

11. 11

    Type the administrator countersign and press ⏎ Return . When the password is accepted, you lot'll see a message asking you lot to ostend that you desire to erase the disk.

12. 12

    Press Y and and then ⏎ Return . The bootable version of the Sierra installer will first copying to your USB bulldoze.^[3]

    • The process volition take several minutes and you'll know information technology's complete when you run into "Re-create Complete" and "Done" in the terminal.
    • If you meet a popular-upwardly bulletin well-nigh Fourth dimension Motorcar during the installation, click the "Don't Use" push.

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1. 1

   Click the Apple menu and select "Restart." A pop-up will appear request y'all to confirm that you want to restart the computer.

2. ii

   Click "Restart" on the confirmation window. The reckoner will power down and restart. Don't walk abroad from the computer, though! You'll demand to take action as soon every bit it turns back on.

3. three

   Hold downward ⌥ Option when you hear the reboot tone. Afterwards a few seconds you'll see a list of bootable drives connected to your Mac.^[4]

4. 4

   Click "Install macOS Sierra" and press ⏎ Return . The macOS Utilities window will appear, containing a list of options.^[5]

5. 5

   Select "Disk Utility" and click Go on . Now you'll see a screen that looks similar to Finder. The left side contains a list of drives connected to the computer.

6. six

   Click your startup drive on the left pane. You may accept to aggrandize the Internal section to find it. When yous click the drive, its properties will announced in the center pane.

7. seven

   Click the "Erase" button. It'south located on the summit toolbar. After clicking, you'll see a pop-up asking you to set some parameters.

   • Remember, erasing the hard bulldoze is permanent. Make certain you lot have backups.

8. 8

   Select "Mac Bone Extended (Journaled)" in the Formatting dropdown. This is the only parameter y'all'll need to alter.^[six]

9. 9

   Click Erase to confirm. The utility volition now format your hard drive, which may take several minutes. You'll run across a confirmation bulletin once the drive has finished formatting.^[7]

10. x

    Close the Disk Utility window. This will bring you back to the macOS Utilities screen.

11. 11

    Select "Install macOS" and click Continue . At present y'all'll be prompted to select a bulldoze on which yous'll install Sierra.

12. 12

    Click your freshly-erased difficult bulldoze. For near people, it'south the simply drive in the calculator (and in virtually cases, it's called "Macintosh Hd").

13. thirteen

    Click the "Install" icon. The icon is at the bottom of the window. Once clicked, macOS Sierra will install on your Mac. When the process is complete, your computer will kick to your brand new macOS Sierra desktop.

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Video

• Run across How to Utilize Siri on a Mac for tips on using Apple's virtual personal banana on macOS Sierra.

• Afterward you exercise a clean install of Sierra, your personal files will no longer appear where they were previously saved. You'll take to restore them from their backup locations.

• To employ the iOS to Mac clipboard characteristic in Sierra, your iOS device must be running iOS 10 or later.^[8]

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About This Article

Article Summary X

1. Back upwardly your Mac.
ii. Go to https://support.apple tree.com/en-us/HT208202.
3. Download the installer.
four. Create a bootable USB install drive.
5. Boot from the bulldoze.
6. Open up Disk Utility.
7. Format your startup bulldoze.
8. Select your bulldoze and click Install.

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Source: https://www.wikihow.com/Clean-Install-macOS-Sierra

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