One of the most common problems faced by LineageOS users is encountering a read-only file system error while attempting to modify system files. This can be particularly frustrating when trying to customize your device or troubleshoot issues.
This guide explores the causes of this error and provides solutions to help you regain write access to your system partition.
**Understanding the Error:**
The error message "failed to remount partition dev:KSU mnt:/system: Read-only file system" indicates that the system partition is mounted in read-only mode, preventing any modifications. This is commonly due to the device's security settings or modifications made during the rooting process.
**Troubleshooting Steps:**
1. **Check Remount Status:**
Before attempting any solutions, ensure you have successfully remounted the system partition as read-write. Utilize TWRP or your preferred recovery environment to perform this action.
2. **Enable USB Debugging:**
Make sure USB debugging is enabled on your device. This is crucial for tools like ADB to access and modify the system files.
3. **Use ADB Remount:**
Connect your device to your computer and use the following ADB command to remount the system partition as read-write:
```bash
adb remount
```
4. **Verify Permissions:**
After remounting, double-check file permissions to ensure you have the necessary write access. Misconfigured permissions can sometimes restrict modifications.
5. **Examine Filesystem Chroot:**
If the issue persists, you might need to investigate your system's filesystem chroot configuration. Incorrect settings here can prevent write access.
6. **Seek Community Help:**
Explore LineageOS forums or online communities for specific solutions related to your device model or encountered error messages.
**Addressing Revolut Detection:**
Revolut's app detects root access and jailed systems to prevent unauthorized modifications. Editing system files like `/system/build.prop` or `/system/etc/nikgapp_logs` may trigger these flags.
Consider alternative methods to achieve your goals, such as using a custom kernel that hides root access or exploring no-root solutions for specific apps. Always exercise caution and research thoroughly before making any modifications to your device as they can potentially lead to data loss or instability.
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