Select 'Disk Utility' and click 'Continue. After a few moments, the macOS Utilities window should appear - this is known as Recovery Mode.Ĥ. Keep holding it until you see either the Apple logo, or an animation of a spinning globe.ģ.

Press the power button to turn it on, then immediately press and hold Command (⌘) + R. Once you're ready to wipe your Mac, do the following:Ģ. If you're giving your computer away, also make sure that you've signed out of iTunes, iCloud, and iMessage - there's a chance your Apple ID data will remain on the drive after you reset it, and you don't want anyone gaining access to your account. Right-click your hard drive and select Get Info to see your drive’s total capacity, available space, and used space. You can also backup onto iCloud, or manually move the files you want to save onto an external drive. You can do this through Time Machine, Apple's official backup application, which will copy all your files onto an external drive. This won’t delete the attachment from the mail server if you’re using IMAP. Click on the message, and choose Message -> Remove Attachments from the menu bar. Use the Sort by Size option to find the biggest messages. Check out the products mentioned in this article: MacBook Pro (From $1,299.99 at Best Buy) How to wipe a Mac computer with a factory resetīefore anything, if you don't want to lose the files you have saved on your computer, you should back them up. Open up Mail, and click on the folder that you want to find and remove attachments for.

How to clear hard drive on mac