C:\Windows\system32>adb devices
daemon not running. starting it now on port 5037
daemon started successfully
List of devices attached
C:\Windows\system32>fastboot -w
Erase successful, but not automatically formatting.
File system type raw not supported.
Erase successful, but not automatically formatting.
File system type raw not supported.
erasing 'userdata'...
OKAY [ 3.262s]
erasing 'cache'...
OKAY [ 0.083s]
finished. total time: 3.347s
C:\Windows\system32>fastboot reboot
rebooting...
finished. total time: 0.002s
daemon not running. starting it now on port 5037
daemon started successfully
List of devices attached
C:\Windows\system32>fastboot -w
Erase successful, but not automatically formatting.
File system type raw not supported.
Erase successful, but not automatically formatting.
File system type raw not supported.
erasing 'userdata'...
OKAY [ 3.262s]
erasing 'cache'...
OKAY [ 0.083s]
finished. total time: 3.347s
C:\Windows\system32>fastboot reboot
rebooting...
finished. total time: 0.002s