Editing the Startup Script

This section covers how to edit the startup script so that changes can be made to it

How the Filesystem Works

The MConn Display runs from a read-only root filesystem by default. Any commands you run during a session — such as loading kernel modules, starting services, or configuring interfaces — will not survive a reboot unless they are added to the startup script.

The startup script is located at /usr/bin/startup-app.sh and is executed automatically on boot.

Modifying the Startup Script

Since the root filesystem is read-only, you must remount it as writable before making changes:

# Remount the root filesystem as read-write
mount -o remount,rw /

Then open the startup script in a text editor:

# Edit the startup script
nano /usr/bin/startup-app.sh

Add your commands to the file and save with Ctrl+O, and exit with Ctrl+X.

Once you’re done editing, you can remount the filesystem as read-only again to restore the default protection:

# Remount the root filesystem as read-only
mount -o remount,ro /

Caution

If the device loses power during a write operation on a writable root filesystem, there is a small risk of filesystem corruption. Remounting as read-only when you’re done is good practice.