30 November 2024 Leave a comment Tech-Help
When attempting to push files to the /system directory on an Android device, users often encounter a “permission denied” error. This issue typically arises when using the adb remount command on a production build device. Here’s a guide to help you overcome this obstacle and successfully modify the system partition.
Understanding the Problem
The adb remount command is commonly used to remount the system partition in read-write mode. However, on production builds, this command fails due to security restrictions. Despite having root access in the shell, users cannot push files from their computer to the device.
Solution: Remounting the System Partition
To remount the system partition, follow these steps:
- Open ADB Shell:
$ adb shell - Gain Root Access:
$ suThis command grants you superuser permissions within the shell.
- Remount the System Partition:
# mount -o rw,remount /systemExecuting this command allows you to remount the
/systempartition in read-write mode, enabling file modifications.
Alternative Methods for Emulators
If you’re working with an emulator, you might need a different approach:
- Start the Emulator with Writable System:
emulator -writable-systemThis option allows the emulator to boot with a writable system partition.
- Restart ADB as Root:
$ adb rootThis command restarts the ADB daemon with root privileges.
- Remount the System Partition:
$ adb remountAfter restarting ADB as root, this command should succeed, allowing you to modify the system partition.
Conclusion
By following the steps outlined above, you should be able to overcome the “permission denied” error when using the adb remount command on Android devices. For emulator users, starting the emulator with a writable system can be particularly effective.
Enhancing Your Testing Workflow with Repeato
For developers looking to streamline their testing processes, Repeato offers a powerful solution. As a no-code test automation tool for iOS and Android, Repeato enables you to create, run, and maintain automated tests efficiently. Its integration with ADB allows you to execute ADB commands seamlessly during your test runs, ensuring precise control over device interactions. By leveraging Repeato’s capabilities, you can enhance your testing workflow and achieve more reliable results.
