1. To enable usb storage device auto detection
sonic(config)# usb enable
2. To mount all available usb partitions
sonic-cli# usb mount
3. To safely un-mount all mounted usb partitions
sonic-cli# usb un-mount
4. To view the usb partitions which have been detected and successfully mounted
sonic# show usb
5. To view the list of usb attached storage media that have been detected
sonic# show usb devices
6. To show the list of partitions available in the usb attached storage media
sonic# show usb partitions