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- Right-clicking on the Dock.
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First, this trick requires that the Terminal window in which you entered the above command remain open. The second caveat is performance. While most modern Macs, even those with Retina displays, can handle a typical screen saver running on the desktop with minimal impact on system performance, those with multiple displays or older Macs may see performance issues with this method.
Use System Preferences to set up the Dock
Regardless, we recommend that most users turn off their desktop background screen saver before performing computationally demanding tasks like video encoding or real-time audio production, just to make sure that every ounce of power is available to the apps that need it. Not every screen saver is a good choice for a desktop background — some are too active and serve more as a distraction than anything else — but if you find the right screen saver, and if your Mac can handle it, animated screen saver backgrounds can make things a whole lot more interesting when working in OS X.
In here you'll see the option to Turn Hiding Off. Select this and your Dock should stay present on screen whenever you're not in full-screen mode. If you're still getting issues with the Dock disappearing after you've followed the steps above, then it could be problem with a corrupted file or other non-settings based issue.
The first thing to do is check if there are any system updates available that you can install. This is easy to do: click on the Apple icon in the top-left corner, select App Store, and when it opens click on the Updates tab.
Should this be empty then it might be worth deleting the preferences file instead. This will reset your Dock back to the way it was when you first got your Mac, so any app shortcuts you've since placed there will need to be added again afterwards.
Desktop disappears, faint Apple logo visible after changing the background colour in Macbook Pro 15
Open Finder, then hold down the Option key and click on the Go option in the Menu Bar at the top of the screen. This shows a few options that are usually hidden , one of which is Library.
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Click this and then select the Preferences folder. Scroll down until you find a file named com.
How To Fix A Disappearing Dock On Mac - Macworld UK
You'll need to delete this file either by using the Backspace key or dragging it to the Trash. Now reboot your machine and macOS will create a new default preferences list which should hopefully clear the problem. If you're still getting issues then we'd recommend contacting Apple customer support.