Question :
I want to change the icon of my internal Mac ‘disk’ (the one that is called ‘Macintosh HD’ by default) to the official icon of my new MacBook Pro.
I used to be able to find the official OSX device icons in this folder :
/System/Library/CoreServices/SystemIcons.bundle/Contents/Resources
…but now I am on macOS 15 Sequoia and there no longer is such a SystemIcons.bundle to be found in that location…

Where can I find the official macOS device icons ?

Answer :
In macOS 15 Sequoia, if you want to replace a folder icon by one of the official device icons (for Macs, iPhones & iPads), do this :
– open a new Finder window
– open to this folder :
/System/Library/CoreServices/CoreTypes.bundle
– open the CoreTypes.bundle by right-clicking on it and selecting ‘Show Package Contents’ from the pulldown menu
– in the Contents folder that opens, go to :
/Contents/Resources/
– there you will find the official icons for all Macs, iPads and iPhones, so select the one you want to use
– right-click on the .icns file and select ‘copy’ from the pulldown menu
– then, in the Finder Settings, make sure that under the ‘General’ tab, there is a checkmark at ‘Hard disks’ so your Macintosh HD will appear on your Desktop
– then right-click on the Macintosh HD’s icon and choose ‘Get Info’ from the pulldown menu
– in the window that opens, click on the current icon top left (just above the ‘Add Tags’ text)
– then, typ the [CMD]+[V] key combo on your keyboard (to paste)
– now, the actual icon will not change, but the preview will
– to complete the replacement of the Macintosh HD icon, restart your Mac
– after the reboot, the Macintosh HD icon will now show the Mac icon of your choice

That’s it !

enjoy 😉