How to change background mac login screen
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Mv ImageForLoginWallpaper.png /Library/Caches/.pngįor Mac users running a prior version of OS X, setting a custom login screen in OS X Mavericks is quite easy too. Move the new image into place to set as the new login screen background picture: Move the original login wallpaper file to serve as a backup:
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If you’re command line savvy, you can achieve the same results with the following, assuming you have a PNG file handy: Set the Custom Login Wallpaper Background with Terminal To reverse the customization, you’d simply want to move the backed up copy back into the original location in /Library/Caches/, as you can see in the screen shot above the backup for this particular walkthrough is just kept in the same folder. You’ll probably want to keep a copy of “.png” handy unless you’re really thrilled with your newly customized login screen, that’s your choice. You should not need to reboot the Mac to see the difference.įor an added customization bonus, don’t forget you can add a message to the login screen of OS X too, this is a good place to put an ownership note or message, maybe even a phone number or email address to signify who owns the specific Mac. Your newly customized background login screen image will be set and you’ll see it upon the new login screen again, you will see this image when you log a user out, boot into the new login screen, or lock the screen to a login authentication window.
HOW TO CHANGE BACKGROUND MAC LOGIN SCREEN HOW TO
Now copy the version of your custom wallpaper named “.png” from the Desktop into the /Library/Caches/ folder How to change Macbook Wallpaper from an image file.Locate the file named “.png”, select it, and hit Command+D to make a copy or drag it somewhere like your user folder and make a copy that way (this will serve as a backup of the default login screen background image – do not skip this).Now go to the Finder of OS X, and hit Command+Shift+G, enter the following path in Go To Folder:.Pull down the “File” menu and choose “Save As”, select PNG as the format, and name the file “.png” – save it to somewhere like the Desktop for easy access.Open the image you want to set as the login wallpaper into Preview app of OS X.Whatever image you wish to set as the login background must be a PNG file, and it should be at least the size of your screen resolution if not larger. That secret wallpaper selection in OS X offers many great options to use on any Mac, and the files are already in the proper format.
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Change the Login Screen Background Wallpaper to a Custom Image in OS X Yosemiteįor the purpose of this walkthrough, we’re going to use one of the hidden wallpapers in OS X of a Cosmos moon / earth shot. You can change the background image to anything you’d like, so if you have a picture handy that you’d like to use that’s great, otherwise you can look in our wallpapers section for something that suits you.īack up your Mac with Time Machine before beginning, though this is a minor change you will want to have a fresh backup anyway just in case you somehow mess something up. Red = bad, right? Who knows.Setting a unique login wallpaper this way is easily done and easily undone too. You'd think there would be a note to explain why your computer screen turned red. It is just the strangest thing in the world and there is no explanation on Apple's site that I can find for it. I ended up re-imaging it because I've got other issues to work on. From the personal settings, you can navigate to the Theme. Then, scroll down the menu and click the Personal option. I googled and only found 1 other person to have come across it but they had no explanation nor cure other than to re-image it. On your Mac, use the browser and look for the gear icon from the top-right side. I can find nothing in the system log to explain this sudden appearance of the red screen. The computer starts up just fine, I still have the EFI partition mounted like I always do (ugh) and all other behaviors are what it normally does. It is always red at the login then goes back to normal after logging in. No one has played a trick on me, I'm the only one who has touched this computer through 5 re-imaging sessions today.Īfter logging in, the desktop reverts to the solid dark green that I set it to. I assure you I did not set the desktop picture to be a solid red color. After one of my reboots the login screen was all red.
HOW TO CHANGE BACKGROUND MAC LOGIN SCREEN TRIAL
Has anyone ever seen a red login screen where the background would normally be the ghostly image of your wallpaper or the solid color you have the desktop set to? Today I spent some time trying to tackle these crazy EFI partition problems causing kernel panics by trial and error on one test Mac.