I use an external storage disk for my Music library in macOS 10.15 Catalina, because the required file size is several times my internal SSD. After upgrading to Catalina, now when I connect the drive to use Music, I cannot eject the drive afterward, due to a lock by the
AMPLibraryAgent process. Here is terminal output detailing the issue:
diskutil unmountdisk /dev/disk2 Unmount of disk2 failed: at least one volume could not be unmounted Unmount was dissented by PID 710 (/System/Library/PrivateFrameworks/AMPLibrary.framework/Versions/A/Support/AMPLibraryAgent) Dissenter parent PPID 1 (/sbin/launchd)
How can I remove this lock without quitting that service process or shutting down my computer?