- Start recovery mac os x how to#
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If you booted from a USB disk, click “Continue” to advance to the installer. 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. Select Recovery HD from the Startup Manager. To access OS X Recovery, reboot the computer while holding the Option key. When the OS X Recovery Disk Assistant completes, the new partition will not be visible in the Finder or Disk Utility. Open Disk Utility from the recovery menu, select your drive, and click the Erase button toward the top of the Disk Utility window. Insert an external drive, launch the OS X Recovery Disk Assistant, select the drive where you would like to install, and follow the on screen instructions.
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Before you can install macOS to the new drive, youll need to format the drive so the installer can recognize it.
Start recovery mac os x how to#
If you choose three or five passes, you might want to leave this running overnight. Step 6 How to use Internet Recovery to install macOS to a new SSD. 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. Release Command-R when you see the Apple logo or another image. Press and hold Command-R, then press the power button. 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. The process to start your Mac into Recovery mode differs slightly between Intel and Apple silicon Macs. 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. In addition to supporting features like FileVault disk encryption, this partition contains all the tools necessary to reinstall or recover OS X, in addition to features like Safari access for looking. Your user accounts and files will stay exactly where they are-only your operating system will be overwritten. Starting with OS X Lion, Apple introduced a local 650MB recovery partition with standard OS X installations, that contains a recovery boot image. 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) Recovery Mode is accessed during system start by using a keyboard combination, here’s how it works: Shut down the Mac, or reboot the computer As soon as the Mac starts booting up, hold down Command + R keys together Continue to hold Command + R keys for a few seconds until a moment after you see the. Continue to hold Command + R keys for a few seconds until a moment after you see the Apple logo, you can then release the keys. As soon as the Mac starts booting up, hold down Command + R keys together. Once you’ve managed to open up the Recovery Mode in some fashion, we can move on to wiping your drive securely. Recovery Mode is accessed during system start by using a keyboard combination, here’s how it works: Shut down the Mac, or reboot the computer.
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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.
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5) The final step has you tapping the ‘Install Mac OS X’ and Continue in the OS X utility section of the screen to start the installation process. Once heard, it will start the OS X in Recovery Mode.
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We break down the most important criteria about a data recovery software application for Mac below to help you narrow down options.If neither of these options work, don’t panic! You’ve got a couple of options yet. Hold the Apple Key and R key until you hear the chime noise. Selecting the best Mac data recovery software can be a challenge since many options look seemingly great and they all work in a similar way.
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