Possibly it is not even an actual file but rather a chunk of disk space that is simply dedicated for this data.

I was trying to figure out how to change the actual snapshot, but it seems it is not accessible. When you reboot, that copy is discarded and replaced by the original snapshot so every change you might have done is gone. When in recovery mode, you can change the files but you're essentially only changing a copy of the snapshot that was mounted by the OS. After some digging around, this seems to be related to the fact that on new Mac OS versions the root partition is actually mounted (in regular mode, as read only) based on a saved snapshot. To my surprise when I reboot back to regular I found all my changes have been reverted. However, disabling SIP, rebooting and going back to recovery mode, I was able to make all of the changes necessary to both plist and the Ringtones directory. The files' locations have not changed (by the way AlertTones can also theoretically be similarly changed) but I also encountered a problem writing to these locations. I was trying to get this to work on Mac OS Ventura 13.2.

Specifically, add system:Custom Ringtone Name at the location shown below (you should replace 'Custom Ringtone Name' with the name of your ringtone file). In order to make your custom ringtone show up in the list of ringtones in FaceTime preferences, you will need to edit the file /System/Library/PrivateFrameworks/Tone Kit.framework/Versions/A/Resources/ist using TextEdit (or some other text editor - you can also use Xcode's developer tools for a nicer interface). Sources: Apple Support, Apple Developer Editing ist Enter the following command: $ csrutil enable Īfter enabling or disabling System Integrity Protection on a machine,.Boot to Recovery OS by restarting your machine and holding down the.To enable or disable System Integrity Protection In order to play around with custom ringtones, you would need to disable System Integrity Protection It looks like in macOS Sierra (actually starting from El Capitan), Apple has implemented a System Integrity Protection technology that restricts access to /System. Re-enable System Integrity Protection (see below for details).Įnabling/Disabling System Integrity Protection.Choose your custom ringtone in FaceTime preferences.Edit the system's property list of ringtones at /System/Library/PrivateFrameworks/Tone Kit.framework/Versions/A/Resources/ist (see below for details).Put your custom ringtone file in /System/Library/PrivateFrameworks/Tone amework/Versions/A/Resources/Ringtones/.Disable System Integrity Protection (see below for details).

Mac el capitan cant login into facetime