ZimaOS root partition (/) full at 100% causing Files app not to load after update

After updating ZimaOS (currently on version 1.5.4), the Files app no longer loads and shows a loading/error state.

Upon investigation, the root partition (/) is completely full (100%), even though the main data partition (/DATA) still has plenty of free space (~80GB available).

Running du shows almost no actual files using space on /, which suggests the issue might be related to overlay filesystem usage or system-level storage rather than user data.

Because of this:

  • The Files app does not open

  • Some services (like MineOS/Minecraft server) fail to start or behave incorrectly

  • The system appears unstable

Attempts already made:

  • Rebooting the system

  • Cleaning logs with journalctl --vacuum-time

  • Removing temporary files

None of these actions freed space on /.

Is this a known issue with ZimaOS 1.5.4 (possibly related to overlayFS), and is there a way to safely recover space without reinstalling the OS?

System info:

  • Root partition: 1.2GB (100% used)

  • Data partition /DATA: ~105GB total, ~80GB free

Any guidance would be appreciated.