When I am trying to copy something from phone memory to SD card or from SD card to computer or vice versa the message shows up in red colour "the root directory is full or has another unknown errors" in my Vivo l55y device please help me to sort out this problem. Regarding photos and attached please find out.
OK, so what could be the problem? You don't have space on the disk? You don't have rights to the disk, therefore it displays an error. I would guess the second indication is correct. When did this problem start? How long have you had the device? Do yo have the right drivers?