Can I change login screen with OS Monterey

Since I upgraded to OS Monterey the login screen after I start my laptop shows the purple shades that are literally called "Monterey"

I really don't like the colors! Looking through system preferences I don't see a way to change the image.

Icon yes, but not the screen? Is there something I'm missing? How can I change the image?

I *really* don't like the colors!

MacBook Pro 13″, macOS 12.0

Posted on Oct 30, 2021 10:04 PM

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Posted on Nov 2, 2022 5:40 PM

The pre-login boot wallpaper now loads from a sealed snapshot. It is not editable.


macOS today operates by separating the system files and the data files into two totally separate volumes. The system files are "sealed". It is, essentially, a read-only volume which Apple distributes. Since the hard disk is encrypted before you login, the computer does not have access to anything other than a little metadata associated with the accounts (username and a small icon and that's about it). Once you enter a password, the data volume can be decrypted. The computer then essentially "merges" the system files and data files together in real time like a zipper through a series of firmlinks.


macOS now boots in a state that is always fresh and identical. Only once you login do all the changes you've made (including wallpaper) become visible to the system.

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157 replies

Dec 2, 2021 12:32 PM in response to lkooima

Thank you. That worked in Monterey. I chose "Photo Wall". in the panel on the left. I loaded my own photos in the box labelled "Source" and I right-clicked in the upper right-hand corner of the "Source" box. I then saw a display of the screen saver: my images scrolled across the screen. I clicked on the screen saver to return to my desktop. I did not shut down my computer to see if it works on startup; but, it should.

Dec 19, 2021 9:08 PM in response to angelika241

I already have my personal image in /Library/Caches/Desktop Pictures with the correct UUID (the image is what I use as desktop wallpaper). Guest is disabled. But the ugly Monterey graphic still displays on boot.

The startup screen is called "Monterey Graphic.heic" and it is located in /System/Library/Desktop Pictures. It cannot be changed because Apple has made the System read-only. This cannot be modified by either root user or sudo. It's an "enhancement" to security and it means any changes to the System will make the computer un-bootable.

There is a a hack, disabling csrutil, but that actually didn't work. I was willing to experiment because this is a new install on a partition. I wanted to see what programs would break in Monterey before committing. Unfortunately, quite a few don't yet have Monterey compatible sw, so I will have to wait.

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Can I change login screen with OS Monterey

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