If you add more allocatable devices to the system, you might need to create your own device-clean scripts. The deallocate command passes a parameter to the device-clean scripts. The parameter, which is shown here, is a string that contains the device name. For more information, see the device_allocate(4) man page.
clean-script -[I|i|f|S] device-name
Is for forced cleanup. The option is interactive and assumes that the user is available to respond to prompts. A script with this option must attempt to complete the cleanup if one part of the cleanup fails.