<Huawei> mount usb0: <Huawei> copy usb0:/S5720-V200R023C00SPC500.cc flash:
The progress bar in the terminal window crawled. ##################################################################################... 45% Huawei Switch Firmware Upgrade
He watched the progress bar. If this upgrade failed, that backup file was his only lifeline to restore the network without causing a total logistical meltdown for the Monday morning shift. mount usb0: <