Windows power management may shut down the USB port to save energy. When the drive wakes up, the usbstor driver fails to renegotiate the connection because the firmware (7.76) does not support the sleep/wake cycle properly.
: If you cannot save files, some generic drives have a physical "Lock" switch. If not, you can use the command in the terminal to run attributes disk clear readonly Secure Data Recovery Canada 3. Data Recovery Tips If the drive contains important data but appears corrupted: Avoid Formatting Usbstor Diskgeneric-usb-flash-disk--7.76