Customizing the login screen appearance on Mac device will make you feel personally different, Since the launch of OS X Yosemite there are many ways came through out the years. But customizing the wallpaper is easiest way to do.
The easy way is setting unique login wallpaper, then you can change the background image to anything easily as you like. In this article let us discuss about how to change the Login Screen Background Wallpaper to a Custom Image in OS X Yosemite.
Initially you’re going to use one of the hidden wallpapers in OS X of Cosmos moon or earth shot some thing like this and this secret wallpaper selection in OS X offers many great options to use on any Mac, and the files are already in the proper format. It means the image you like to set as the login background must be PNG file, and it should be at least the size of your screen resolution if not larger. Once you’re done with this stuff, Simply you need to follow the steps given below.
- Open the image you want to set as the login wallpaper into Preview app of OS X.
- Now Pull down the File menu and choose Save AS, select PNG as the format, and name the file “com.apple.desktop.admin.png” and save the file to Desktop for easy access.
- Now go to the Finder of OS X, and hit Command+Shift+G, enter the following path in Go To Folder: Library/caches.
- Navigate the file named “com.apple.desktop.admin.png” and select it and press command+ D to take a copy or drag it somewhere.
- Now copy the version of your custom wallpaper named “com.apple.desktop.admin.png” from the Desktop into the /Library/Caches/ folder
- Once you copied the version of custom wallpaper then close the /Library/Caches/ folder and log out of the current user account to see the change.
How to Set Custom Login Wallpaper Background with Terminal
If you have PNG format file then simply follow the below commands.
- Move the original login wallpaper file to serve as a backup: mv /Library/Caches/com.apple.desktop.admin.png ~/Desktop/backup/
- Move the new image into place to set as the new login screen background picture: mv Imageforloginwallpaper.png/library/caches/com.apple.destop.admin.png
- Finally logout to see the changes.