Before disposing of your old computer, read carefully the instructions below.
Save important files – back up your files on an external hard drive or transfer them to a new computer
If you’re using Box Sync, log out of it and un-sync it:
Click on the Box icon in the top right corner of your desktop; select Preferences; on the Status tab, click the On/Off button to un-sync it; switch to the Settings tab, and click Log Out button.
Once you’ve done this, go to Box in your browser, and un-sync all the files and folders you have synced with your computer.
Wipe your hard drive:
Before you start, find out the name and the format of your device:
Go to Finder, select your device, right-click on the hard drive, select Get Info, and note the name and the format on a piece of paper
Reboot the Mac and hold down Option+Command+R to boot into Recovery; alternatively, hold down the Option key until the boot manager screen appears
Select Recovery HD at the boot menu
At the Mac OS X Utilities screen, select Disk Utility
Click the Erase button
In the new pop up window, complete the fields as necessary
To find out the name and the format, go to Finder, select your device, right-click on it and select Get Info
Click the Security Options button, and use the slider to choose the most secure erase option (NOT the fastest option), then click OK
Click Erase
This process is going to take a while, so make sure your computer is plugged in and charging
If you are unable to access Disk Utility, remove the hard drive and drill holes in it or smash it.
Recycle the computer – don’t throw the computer in the trash and don’t dispose of it with household recycling
