Click Mail on the Apple menu bar and select Accounts.

If you have a close email exchange with someone else, sign out of your Mail account can prevent the emails from being checked by others.

Open Preferences from the menu bar and then click iMessage.

Open Messages from the Dock of your Mac.

If you've signed in to iMessage on your MacBook, disable it. Like iCloud, iMessage synchronizes messages between your Mac and other Apple devices, like iPhone. Then, you can see all data stored in iCloud when signing in to your iCloud with your Apple ID on other devices. When asked whether to keep a copy of the iCloud files on your Mac, you'd better allow it.

Select the Apple menu > System Preferences.

If you use a MacBook with macOS Mojave or earlier, you can follow these steps:

Choose Overview at the sidebar, then click Sign Out on the iCloud window.

Select the Apple menu > System Preferences > iCloud.

If you have a Macěook that runs macOS Catalina or later, you should:

If you've enabled iCloud on your computer, you should sign out of it. ICloud is secure cloud storage that is widely used to back up and synchronize data between Apple devices. To erase your account information, you need to sign out of or deauthorize apps that contain important personal data. If that happens, others will have the opportunity to access the data stored on your apps. There's a chance that your account information remains after you reset your MacBook.

How to reset a Mac without reinstalling macOS? Step 1: Erase all of your account informationĪpps on your Mac usually contain your private files.

You can also transfer your iTunes library to a new computer with the iTunes app.Īfter that, follow the steps below to clean up all data stored on your MacBook. You can back up your Mac with Time Machine, the macOS built-in utility.

So, before you get down to empty your Mac, you'd better back up the necessary documents, emails, and other data in advance. Wiping a computer means that all files, including your private data, will be cleaned. Here, this post will guide you on how to completely wipe a MacBook in the right way. Notably, wiping a computer cleanly doesn't means delete files one by one as your MacBook has huge amounts of data.

Prepare Mac for sale, give away, or trade in your MacBook to someone else.

You have to erase your MacBook when running into certain occasions, such as:

Wiping mac hard drive and reinstalling