I cannot Write or move any apps to my SD card
The default install location can be changed using the adb shell pm command. The command is: adb shell pm set-install-location 2. The three options for set-install-location are 0 (auto), 1 (internal), and 2 (external). This can cause applications to break or other behavior that is undesirable. You can view this information by typing adb shell pm at the terminal. Side note: you can check what the current default install location is by typing adb shell pm get-install-location.