cdm probe can monitor the usb (removable ) devices with the below exceptions
The probe does not support monitoring of the following disk types:
- (Windows) Automounted devices and removable drive filesystems without blocks or block sizes.
- (Linux) Filesystems without blocks or block sizes or that meet any of the following conditions:
If /dev is not associated with drives
If /none is associated with drives
You can verify the associations using the cat /proc/mounts command on the monitored system.