How to erase hard drive apple mac

We do not modify the data we found. We allow entities time to remedy the data exposure prior to making any details available publicly that would otherwise cause further risk.

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We do not transfer any data to any third parties. Why do we do this? Here, in the Security Research Center, we do our best to: Help businesses build better security by identifying data leaks, and Raise public awareness to the dangers related to data breaches and security risks in the connected world. Here are your next steps: Click Erase. Reinstall macOS optional Now, with your hard drive completely erased and free of any data, you can perform a clean install of macOS.

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How to erase a disk for Mac

Choose your iMessage account, then click Sign Out. If you're handing down your old Mac to your kid or someone else in your house, then it's a good idea to unpair any Bluetooth devices from it so your mouse or keyboard controls your new Mac and doesn't interfere with your old one. To enter recovery mode, restart your Mac and immediately press and hold Command-R. You can release the keys when you see the Apple logo. Next, you'll see the MacOS Utilities window.

The SSD Erasure Issue

Choose Disk Utility , click Continue and select your startup disk -- unless you renamed it, odds are it's labeled Macintosh HD or something similar. Next, click the Erase button at the top of the Disk Utility window and fill out these three fields:. You should return to the MacOS Utilities window. If not, restart your Mac again, holding down Command-R while it reboots.

Erase all data from Macbook Pro • Josh Benson

After MacOS has been reinstalled, you'll be greeted by the Setup Assistant, which you can quit out of and shut down your Mac. It's now ready for a fresh start with its next owner. New iPad Pros, new MacBooks and more: Which Security Option should you choose? From the available options that Disk Utility provides, Security Option 1 is, of course, the least secure. Someone will be able to recover your data without much effort. Security Option 4 is the most secure, but it is also widely believed to be a waste of time and electricity. Personally, I always go with option 2, but if you want to feel more confident your data is securely erased, or if you must comply with company rules, use option 3 or 4.

This works for any hard drive, internal or external. Just be aware that if you want to properly erase the hard drive that is also your startup drive, you will have to start your Mac from an external media first. An external hard drive or thumb drive will do. For help creating a bootable external drive, have a look at Apple's page here , or use a popular tool such as DiskMaker X.

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As you can imagine, having an external bootable drive or installer drive can come in handy. Some people say that the standard erasing of an SSD makes data recovery hard enough for it to be "secure. Technology such as wear leveling , which tries to ensure each memory block on an SSD is used the same amount of times, can really mess with a secure erase.

Backup the Mac Mini

If we can't be confident an SSD was properly erased, then there is only one route to take that will ensure all data is beyond the reach of anyone: Using encryption. By using FileVault to encrypt the drive startup drive and Disk Utility to encrypt external drives, all the data on the drive will be garbled, unless someone has the encryption key your password.

Now, when it comes time to part with your drive, all you have to do is a basic erase in Disk Utility. This will delete your encryption key, leaving nothing but garbled data on the drive. Without a way to decrypt the garble, even if all of it is recovered, it will be useless.