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How to Wipe a Computer Clean of the Personal Data – Guide
Last fall, Apple released computers using its own M1 processor, also known as Apple’s silicon. You will need to perform different steps to perform a factory reset on one of them (see below) and an Intel-based Mac.
Once again, before starting, make sure to come back up important files and exit iCloud. This can be done in the Apple ID section of the System Preferences application.
You should also copy your keyring to a flash drive. This step is not necessary, but transferring these account names and passwords to your new machine will save you the hassle of re-entering your WiFi password at the local coffee shop or login information for online retailers.
To perform a factory reset on Intel-based Macs, hold down Shift + Option + Command + R while starting up your Mac until the Apple logo appears on the screen. This will reinstall the operating system that came with your Mac. Alternatively, you can hold Command + R to reinstall the latest MacOS installed on your Mac, or Option + Command + R to update to the latest version of the operating system that your computer supports .
After doing this, the Utilities window will appear. up in the middle of the screen. Open Disk Utility and erase the internal hard drive. Be sure to select the disk, not the volume name listed below it. Then select the MacOS Extended (Journaled) format and close Disk Utility when the process is finished.
To complete the reset, navigate back to the Utilities window and choose Reinstall MacOS (or OSX) to reinstall the original operating system.
After reinstallation, the Mac will start the setup process. This should look familiar if you have defined up this computer before. If you’re selling your computer, you can skip the setup by pressing Command + Q and let the new owner complete the process.
For M1-based Macs, Apple says you need to make sure you’re running the latest version of MacOS before you start. You can do this by clicking System Preferences in the Apple Menu in the upper left corner and clicking Software Update. When finished, turn off your Mac and turn it on again while holding down the power button. button. Eventually, a screen will appear with a black background and two icons: your hard drive (called Macintosh HD unless you change it) and Options. Click Options.
At this point, you may be asked to enter a username and password. Once that’s done, click Disk Utility > Hard Drive (again, called Macintosh HD unless you change the name) in the left sidebar > Erase. You will be asked to enter a new Name (consider Macintosh HD, for simplicity) and Format (which should be APFS).
Now click on Erase Volume Group, enter your Apple ID when prompted and click Erase Mac and Restart. Then you can follow the onscreen instructions, which include things like selecting your WiFi language and password.
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