Create a backup. Make sure that you have a current backup of your important files. You’ll now see your list of hard drives. Click your primary drive, then click “Erase” If you’re wiping a mechanical drive, click “Security Options” in the window that pops up. (If your Mac has a solid state drive, you can skip this part: your SSD will already securely erase files thanks to TRIM. You still need to wipe the drive.

Are you retiring an older Mac that has a mechanical, spinning hard drive in it? If your Mac is running OS X 10.11, or newer, then continue reading this article. Below are instructions on how you can securely erase the Mac’s hard drive before you donate your Mac or sell it.

If your Mac is running OS X 10.7 to 10.10 and has a mechanical, spinning hard drive, please read my older article on securely erasing a spinning hard drive using Disk Utility.

If your Mac has OS X 10.7 or newer and a solid state drive Adobe illustrator for mac crack. , also called flash storage, then you should instead use these instructions to securely erase your SSD drive.

If your Mac is running OS X 10.6 or older, use this 2010 Tech Tip which has instructions on How to Securely Erase A Mac’s Hard Drive.

Here are the steps to securely erase your spinning hard drive on OS X 10.11 (El Capitan) or newer versions of the Mac operating system (macOS).

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1. Turn on the laptop and immediately press and hold down both the Command key and the R key. This instructs the computer to startup from the Recovery Partition.
2. Once you see the Apple logo appear in the middle of the screen you can release the Command and R keys.
3. Give your Mac a couple of minutes to startup, at which point you’ll see a window like the one this one.
4. Click on the Disk Utility option from the “OS X Utilities” window.
5. In the left pane of the Disk Utility window, click on Macintosh HD (which is your laptop’s internal hard drive).
6. In the right pane of the Disk Utility window, click the Erase tab.
7. Click the OK button.
8. Click the Erase button.
9. You’ll be asked if you’re sure you want to erase it. You’re sure. Go ahead and click the Erase button.
10. Click on the Disk Utility menu and select Quit Disk Utility
11. You’ll be returned to OS X Utilities window.
12. Click on the Utilities menu and select Terminal. Be careful when issuing commands from the Terminal. Issuing commands requires precision and is unforgiving. One small typo could lead to the unintended loss of data or lose. Only proceed if you’re comfortable using Terminal.
13. Type diskutil secureErase freespace 2 /Volumes/Macintosh HD (or replace Macintosh HD with the precise name of your Mac’s hard drive or replace 2 with another “Level”, see guide below) and then press the Return key. Important Note: For a detailed explanation of this command read this article at OS X Daily about erasing free space from the command line.
    Listed below are the various Levels permitted, from 0 to 4.
    • 0 writes zeroes to the disk once
    • 1 writes a series of random numbers
    • 2 writes zeroes 7 times
    • 3 writes zeroes 35 times
    • 4 writes zeroes 3 times
14. Sit back and wait many hours for the hard drive to be securely erased. A process window, like the one below will be displayed in Terminal.
15. When the erase procedure eventually finishes, type exit in the Terminal window.
16. Click on the Terminal menu and select Quit Terminal
17. You’ll be returned to the OS X Utilities window.
18. Click on the Apple menu and select Shutdown.

If you own an older Mac computer, it’s easy to wipe the hard drive for sale. But for newer models, including iMac Pro, 2018 Mac mini, and all MacBook Pro and MacBook Air models released since 2018, a full reset process is required.

Apple’s new T2 security chip, which adds an Activation Lock. Safari for mac os x yosemite. It is another layer of security protection for making it difficult for thieves to do it, but if you forgot to remove the ability to use. The T2 chip before you used your computer, this will cause you trouble even before it is delivered to use.

Also Read: How to Wipe Hard Drive and Erase All Data

The following steps will help you in removing the activation lock function step by step. So, the T2 chip will not cause you trouble later.

How to Reset the T2’s Mac?

• First, make sure you have Activate Lock turned on to avoid wasting any time on you. To do this, click the Apple logo in the upper left corner of the screen, and then click “About This Mac“
• Click System Report. On the first screen you see, your activation lock status is displayed (note the red arrow in the image below)
• If “Enabled” is displayed, continue with this guide. If “Disabled” is displayed, you can proceed and reset your computer.

• The next step is to open System Preferences. Click the Apple ID, and then click iCloud.

• The Find My Mac feature will be listed. Uncheck it.
• Last Step, finally, click “Logout.”
• You will be able to complete the reset by following the steps listed here.

How to Remotely reset T2 Equipped Devices?

How To Wipe Computer Clean Before Selling

If you use a browser on another computer, phone or tablet, you can remotely wipe a computer equipped with T2.

• Sign in to your iCloud account on iCloud.com, and then sign in with the Apple ID associated with the Mac in question.
• Click the Find iPhone icon (even if you are using a Mac).
• Select all devices and find your Mac on the list.

Wipe Hard Drive For Macbook Air

• Click Erase Mac. Once deleted, click the “X” button next to your Mac in the list
• You can now sell the machine.