Which command disables the logging of syslog messages to the local disk?

'no system logging disk local' is not a standard or syntactically correct command for disabling local disk logging in Cisco SD-WAN or common IOS XE platforms.

'system logging server remote' configures syslog messages to be sent to a remote server but does not affect or disable logging to the local disk.

'no system logging disk enable' is not a standard or syntactically correct command for disabling local disk logging in Cisco SD-WAN or common IOS XE platforms.

The 'system logging disk disable' command explicitly configures the device to cease writing syslog messages to its local storage. This action effectively stops the local disk logging function, preventing further syslog entries from being saved to the device's internal storage.