Description: The function mirrors the whole content of the SD card into the internal flash memory of a micro switch with internal memory. This command only executes when the device is currently running on the SD card to be copied. On switch versions without internal memory nothing will happen. There are two options. OVERWRITE: All data previously stored in the internal memory, including config and passwords, is overwritten. Possibly existing custom configurations or scripts are retained. REPLACE: The internal memory is first erased before the copy commences. Any existing data are removed. This assures are clean copy ofth SD card without possible extra data being retained. Note: The miror command will not operate when system.boot_preference is set to INTERN_ONLY to safeguard the device against an illegally inserted SD card. Syntax: mirror_sd_card = OVERWRITE (or REPLACE) (uppercase).