Open the Messages app, go to Messages > Preferences, click the iMessage tab and then click Sign Out. Lastly, you'll need to sign out of Messages. Next, click Overview from the left panel and then click the Sign Out button. Go to System Preferences > Apple ID, click iCloud in the left panel and then uncheck Find My Mac. Next, you'll need to turn off Find My Mac and sign out of iCloud. You'll need to enter your Apple ID and password and then hit the Deauthorize button. Open up any of those apps and go to Account > Authorizations > Deauthorize This Computer. Years ago, this was done using iTunes, but you now must individually sign out of three apps - Music, TV and Books. First, you'll need to sign out of all of your accounts. Sign out of your accountsĪfter migrating your data to your new Mac or making one last backup to preserve your data, it's time to remove all traces of yourself from the machine. Here's how to remove all traces of your data and return your old Mac to its default factory settings.
There's always a chance that some malware could snake its way in and uncover your personal details. Your Mac's hard drive is bursting with sensitive information that you wouldn't want to be accessible, even if you trust your laptop's next owner.
It's a crucial security measure you don't want to skip.
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