What is this?

This is my current workaround for ASUS routers that no longer execute commands in the script_usbmount NVRAM variable on USB mount.
Additionally, the variable is now being cleaned by (most likely) asd (Asus Security Daemon) on newer firmware.

Installation

Your router must have a USB port and support ASUS Download Master.

Automatic

The easiest way to install this is to run the installer while having only one USB storage plugged in:

curl "https://raw.githubusercontent.com/jacklul/asuswrt-scripts/master/asusware-usb-mount-script/asusware-usb-mount-script.sh" | sh

curl is not available? try wget

wget "https://raw.githubusercontent.com/jacklul/asuswrt-scripts/master/asusware-usb-mount-script/asusware-usb-mount-script.sh" -O - | sh

Manual

If the installer fails for some reason then you can download asusware-usb-mount-script.zip then extract asusware.arm directory to the root of your USB storage device.

Important

If your router's architecture is not ARM then you will have to replace it with the correct one in these files:

• asusware.arm/lib/ipkg/status
• asusware.arm/lib/info/usb-mount-script.control
• asusware.arm/lib/lists/optware.asus

You will also need to rename asusware.arm directory to contain the new architecture suffix as well.

Known supported architecture values are arm, mipsbig, mipsel.
For mipsel, the directory has to be called just asusware (no suffix).

Usage

The script is hardcoded to launch /jffs/scripts/usb-mount-script script after USB storage is mounted.
You can modify asusware.arm/etc/init.d/S50usb-mount-script script to run your own logic.
You can also add more scripts to asusware.arm/etc/init.d directory if you wish.

If the script does not seem to start...

• grab another USB stick
• plug it into the router (it has to be the only one plugged in)
• install Download Master
• "safely remove disk" through the ASUS web UI
• unplug the USB stick and reboot the router
• plug in the "workaround" stick - it should work now

Reducing script startup delay

To reduce the delay before the script is triggered you can prevent the firmware from checking mounted filesystems for errors.

Warning

Do not do this if you're using the USB stick for other purposes like file share or Entware.
Power failures will lead to filesystem corruption, without fsck running regularly it will eventually make the filesystem broken.

nvram set stop_fsck=1
nvram commit