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How to change login screen on MacBook

Date 30/09/2023
Category
Apple Blog, Apple How to?, Apple Macbook Blog
Tagscustomization, Login Screen, macbook
How to change login screen on MacBook

How to change login screen on MacBook

 

Changing the login screen on your MacBook can be a great way to personalize your device and give it a unique touch. Here’s a quick guide to help you customize your login experience.

Transform your MacBook login screen into a personalized masterpiece!

Changing the login screen background on your MacBook can give your Mac a personalized touch. Here’s a detailed step-by-step guide on how to do it:

  1. Prepare Your Image:
    • Choose the image you want to set as your login screen background. Make sure it’s the right resolution for your screen size, typically matching your Mac’s native resolution.
  2. Convert the Image to the Correct Format:
    • Your image should be in PNG format. If it’s not, you can easily convert it using built-in macOS tools or third-party image editing software.
  3. Access the Library/Caches Folder:
    • Open a Finder window.
    • Click “Go” in the menu bar.
    • Select “Go to Folder.”
    • Enter “~/Library/Caches” and press “Go.”
    • Locate the file named “com.apple.desktop.admin.png.” This is your login screen background image.
  4. Backup the Original Image:
    • Before making any changes, copy the original “com.apple.desktop.admin.png” file to another location as a backup.
  5. Replace the Default Image:
    • Delete the original “com.apple.desktop.admin.png” file in the “Caches” folder.
    • Move your custom PNG image into the “Caches” folder.
    • Rename your custom image to “com.apple.desktop.admin.png.”
  6. Adjust User Account Images:
    • For a complete customization, you can also change the profile pictures associated with your user accounts. Open the “System Preferences” from the Apple menu.
    • Click “Users & Groups.”
    • Click on your user account picture, and you can select a new image for your profile.
  7. Restart Your Mac:
    • To see the changes, restart your MacBook. When it boots up, your customized login screen background should appear.

Remember that this method works for most macOS versions. However, with each macOS update, the location of system files may change slightly, so it’s essential to ensure compatibility with your specific version. Additionally, making system-level changes carries some risk, so proceed with caution and always back up your data before making modifications.

What tools or methods can I use to convert an image to the correct format?

To convert an image to the correct format for the login screen on your MacBook, you can utilize various image editing tools and methods. One straightforward approach is to use the built-in Preview application, which offers basic image editing capabilities. Begin by opening your desired image in Preview, then navigate to the “Tools” menu in the menu bar and select “Adjust Size.” Here, you can adjust the image’s dimensions to match your screen resolution. Next, save the image in a compatible format, such as PNG, by selecting “Export As” from the “File” menu. Remember to choose a meaningful name for the file, making it easier to locate later.

Alternatively, you can use more advanced image editing software like Adobe Photoshop or GIMP. These tools provide extensive options for manipulating images. After opening your image, navigate to the “Image” menu and select “Image Size.” Adjust the dimensions to fit your screen resolution. Ensure you save the file in the PNG format to maintain optimal quality. Once the image is converted, you can proceed to rename it to “com.apple.desktop.admin.png” for it to be recognized as the login screen background. This method provides more control over the editing process and allows for precise adjustments to achieve the desired look for your login screen.

How do I disable System Integrity Protection (SIP) to replace the default image?

To disable System Integrity Protection (SIP) in order to replace the default login screen image on your MacBook, you’ll need to boot your Mac into Recovery mode. Start by restarting your Mac, then immediately hold down Command + R until the Apple logo appears. This will boot your Mac into Recovery mode. From here, navigate to the Utilities menu in the menu bar and select Terminal. In the Terminal window, type the command “csrutil disable” and press Enter. This command will disable SIP, allowing you to make system-level changes.

Next, locate the default login screen image file named “com.apple.desktop.admin.png.” It’s usually stored in the “Library/Caches” folder on your system. You can access this folder by opening the Finder, selecting “Go” from the menu bar, and then choosing “Go to Folder.” Type in the path to the “Caches” folder, and look for the file. Replace it with your desired image, ensuring that the new image is named “com.apple.desktop.admin.png.” Once you’ve replaced the file, restart your Mac and you should see your customized login screen background. Keep in mind that after making these changes, it’s a good practice to re-enable SIP by booting back into Recovery mode, opening Terminal, and entering the command “csrutil enable” to ensure the security of your system.

What should I do if I encounter any issues or unexpected behavior after changing the login screen?

If you encounter any issues or unexpected behavior after changing the login screen on your MacBook, here’s what you should do:

  1. Revert to the Original Background:
    • If you experience any problems, the first step is to revert to the original login screen background. Go back to the “Library/Caches” folder and replace the custom image with the backup of the original “com.apple.desktop.admin.png” file. Restart your Mac to see if the issues persist.
  2. Check for Resolution Compatibility:
    • Ensure that your custom image has the correct resolution for your screen size. Using an image with an incorrect resolution might cause display problems. Revert to an image with the appropriate resolution if necessary.
  3. Verify File Format and Name:
    • Double-check that your custom image is in PNG format and has been renamed correctly to “com.apple.desktop.admin.png.” Incorrect file formats or names could lead to unexpected behavior.
  4. Inspect User Account Changes:
    • If you also changed user account profile pictures, go back to “System Preferences” and verify that the new images are compatible and correctly applied to your user accounts.
  5. Look for Earlier Versions:
    • If you have recently updated your macOS, there might be changes to system files. Check if there are earlier versions or different locations for login screen images specific to your macOS version.
  6. Review Background Color and Resolution:
    • Ensure that your custom image does not clash with the login window’s default background color and that it’s the right resolution for a seamless display.

If issues persist, consider seeking assistance from Apple Support or online communities dedicated to Mac troubleshooting. Making system-level changes always carries a risk, so it’s crucial to proceed with caution and ensure you have backups of your important data before making any modifications.

 

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