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1. #Clean install mac os sierra on a locked macbook how to
2. #Clean install mac os sierra on a locked macbook download

If not you can find Disk Utility in the menu bar: click Utilities then Disk Utility. To get started, click the Disk Utility option.ĭepending on how you started Recovery Mode, you may be presented with the option to start Disk Utility right away, as seen above.

#Clean install mac os sierra on a locked macbook how to

We’ve shown you how to securely wipe a hard drive with your Mac, and doing so in Recovery Mode isn’t really different from doing so within macOS. If you want a truly clean installation, however, you need to first wipe your hard drive.

We recommend backing up files before you do this, just in case, but otherwise you’re ready for step three. Your user accounts and files will stay exactly where they are-only your operating system will be overwritten. If you want to re-install your operating system, but leave your files in place, you can skip this step. RELATED: 8 Mac System Features You Can Access in Recovery Mode Step Two: Securely Wipe Your Hard Drive (Optional) Once you’ve managed to open up the Recovery Mode in some fashion, we can move on to wiping your drive securely.

#Clean install mac os sierra on a locked macbook download

You can access recovery without a partition using Network Recovery: hold Command+Shift+R while turning on your Mac and it will download the Recovery features for you. Failing that, you can create a bootable USB installer for macOS Sierra, and boot from that by holding “Option” while turning on your Mac.

Step 3: Erase and Reformat the Mac’s Boot Drive.If neither of these options work, don’t panic! You’ve got a couple of options yet.Step 2: Create a Bootable macOS High Sierra Installer.How to Perform a Clean Install of macOS High Sierra How do I wipe and reinstall my High Sierra? You will need to be able to connect to the internet during the set up process so make sure that there is a web connection and that you know the password.ġ7 дек. Step 1: Make sure that there is an internet connection.Once the recovery screen comes up start Disk Utility and go to the erase tab.

Select your wifi then you should see a spinning globe while the recovery utility downloads. Hold command-option-r at boot to start in Internet recovery mode. In the Recovery app window, select “Reinstall macOS,” click Continue, then follow the onscreen instructions. After the disk is erased, choose Disk Utility > Quit Disk Utility. Click the Format pop-up menu (APFS should be selected), enter a name, then click Erase. Select your startup disk on the left, then click Erase. Select the Format option Mac Extended (Journaled) or APFS. Choose your Mac’s system drive, usually named Macintosh HD, then click Erase. Wait for the macOS Utilities screen to appear, then click Disk Utility. Hold down the Command and R keys as soon as you hear the Mac tone indicating a reboot. After install, the file would usually be deleted anyway, unless you move it to another location. Nothing at all except you would have to download it again if you ever need it. It is safe to delete, you will just be unable to install macOS Sierra until you re-download the installer from the Mac AppStore. How long does it take to reinstall macOS High Sierra? Can I delete macOS High Sierra installer?.How do I install macOS High Sierra without App Store?.How do I wipe and reinstall my High Sierra?.What’s the difference between Apfs and Mac OS Extended?.How do I completely wipe my macbook pro?.