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#Clean install mac os sierra external hard drive how to#
#Clean install mac os sierra external hard drive mac os x#
#Clean install mac os sierra external hard drive software#
#Clean install mac os sierra external hard drive download#

Notice: Remember to replace with the name of your installer disk. Sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/ -applicationpath /Applications/Install macOS High Sierra.app Type, or paste, the following command into Terminal, where is the name you gave the installer drive when you formatted it:.Launch Terminal either by searching for it in Spotlight or navigating to the Utilities folder in Applications. Drives partition must be flagged as active so that the system can boot it.You'll see a couple of drive options on the.

Power down your Mac and boot it back up with the Option key pressed down.

#Clean install mac os sierra external hard drive how to#

When it’s finished, click Done and close Disk Utility. How to Disable / Enable Font Smoothing in macOS Monterey Tutorial 1.

Give the USB stick a name, then click Erase.

Click the Erase tab and make sure Mac OS Extended (Journaled) is selected in the format tab.

It’s a good idea to use a USB stick to put the bootable installer onto.

Plug in the USB stick and launch Disk Utilities.

The installer will remain in your Applications folder. As soon as it does, select File and Quit (or keyboard shortcut Command-Q) so it doesn’t install.

When it’s finished, the installer will launch.

#Clean install mac os sierra external hard drive download#

Download macOS High Sierra from the App Store.

Get the right tools for clean installing Apple's operating system.Ĭlean Install Of High Sierra On New Ssd Create a bootable macOS installer Open Disk Utility by opening your Applications folder and clicking on the Disk Utility app within the Utilities. If you booted from a USB disk, click “Continue” to advance to the installer.Your Mac deserves a fresh start. Connect your external drive to your computer. If you booted from a functioning recovery partition, click the “Reinstall macOS” button. With your information wipe complete, you are now ready to reinstall macOS. After completion of scanning, preview the files.

#Clean install mac os sierra external hard drive software#

Click Scan and the software begins scanning process. Select the hard drive from which you wish to recover the data. Customize your scan and toggle the data type you want to recover. If you choose three or five passes, you might want to leave this running overnight. Download, install and run Stellar Mac Data Recovery. If you opted to wipe your drive securely, this might take a while-30 minutes to an hour is not unreasonable for one pass. Just give your drive a name (I recommend “Macintosh HD”, just for consistency’s sake), then click “Erase” to start the overwriting process. You only need to write over a drive once to securely wipe it, but if you’re paranoid you can also wipe it three or five times.Ĭlick “OK” once you’ve decided, but remember: if your Mac has a solid state drive, you do not need to use these options. Now move the dial up, to randomly write data over your entire drive. You still need to wipe the drive, however, or your files will remain in place, so skip to the end of this step to do so.) (If your Mac has a solid state drive, you can skip this part: your SSD will already securely erase files thanks to TRIM. If you’re wiping a mechanical drive, click “Security Options” in the window that pops up.

Click your primary drive, then click “Erase” 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. 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)

#Clean install mac os sierra external hard drive mac os x#

Once you’ve managed to open up the Recovery Mode in some fashion, we can move on to wiping your drive securely. Re: Kernel Panic after installation of Mac OS X 10. 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. If neither of these options work, don’t panic! You’ve got a couple of options yet.