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One of the first things computer users do when they get a new Mac or install a new operating system is set their screen savers. Mac OS X Lion comes with several screen-saver modules. To set up your Max OS X Lion screen saver, follow these steps:
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- Open System Preferences; click the Desktop & Screen Saver icon; click the Screen Saver tab to see the options.
- In the Screen Savers column on the left side of the pane, choose a screen saver option that interests you.If you can’t decide, you can choose the Use Random Screen Saver check box. This will have your Mac choose a new screen saver at random each time the screen saver starts.
- (Optional) To see what the chosen module looks like in action, click the Test button. Then press any key or click anywhere to end the test.
- After you’ve chosen a screen saver, drag the Start Screen Saver slider to the number of minutes you want your Mac to wait before activating the screen saver.If you see the yellow Alert icon below the slider, click the words in blue (Energy Saver preferences), which causes the Energy Saver pane to replace the Desktop and Screen Saver pane. Drag the Computer Sleep slider to a value higher than the number of minutes you selected in step 4. Click the Back button when you’re done to return to the Desktop and Screen Saver pane.
- (Optional) Choose the Show with Clock check box to display a digital clock along with the screen saver.
- (Optional) Click the Hot Corners button to choose which corner of your screen activates the screen saver and which disables it.If you enable this option, when you move your cursor to the chosen corner of the screen, you activate or disable the screen saver until you move the cursor elsewhere.Note that hot corners are optional and are turned off by default.
- When you’re finished, close the Desktop & Screen Saver pane.
Check compatibility
You can upgrade to macOS Sierra from OS X Lion or later on any of the following Mac models. Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.
MacBook introduced in late 2009 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid 2010 or later
Mac mini introduced in mid 2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid 2010 or later
MacBook Air introduced in late 2010 or later
MacBook Pro introduced in mid 2010 or later
Mac mini introduced in mid 2010 or later
iMac introduced in late 2009 or later
Mac Pro introduced in mid 2010 or later
To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS Sierra, the installer will let you know.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download macOS Sierra
For the strongest security and latest features, find out whether you can upgrade to macOS Catalina, the latest version of the Mac operating system.
If you still need macOS Sierra, use this link: Download macOS Sierra. A file named InstallOS.dmg will download to your Mac.
Install the macOS installer
Double-click the downloaded file to open a window showing its contents. Then double-click the file within, named InstallOS.pkg.
Follow the onscreen instructions, which will guide you through the steps necessary to install.
Macos Screensaver
Begin installation
After installation of the installer is complete, open the Applications folder on your Mac, then double-click the file named Install macOS Sierra.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
Allow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Learn more
- If you have hardware or software that isn't compatible with macOS Sierra, you might be able to install the previous version, OS X El Capitan.
- macOS Sierra won't install on top of a later version of macOS, but you can erase your disk first or install on another disk.
- You can use macOS Recovery to reinstall macOS.