Root tools

Root Tools is a special interface in [ATU app] available when running with root rights. To start Root Tools start your [ATU app] and go to "About" page, then on the bottom there is a button for entering root tools.

Below is a listing of functions by pages:

• Page: OS Tools
  • Rootfs free space - displays information about remaining free space on your rootfs
  • swappiness - allows for changing swappiness value on the system. Especially useful on devices where swap partition/file is located on flash-based memory, like on single board computers or mobile devices. Or on desktop machines where swap is located on SSD drive.
  • rootfs size - this option will only show up on devices where rootfs is a loopback device. For example it is the case on Nexus 5, but is not the case on Meizu MX4 (on which rotfs is an actual partition).
    If you see this option, means you are running rootfs from a loopback device and you can easily resize it.
    For more in-dept understanding of this function in Ubuntu Touch scenario please see [resizing rootfs on UT].
  • rootfs writability - on systems where rootfs defaults to read-only mode, this function will allow to remount it as writable.
  • rootfs data moving to userspace - on systems where rootfs space is very limited, and with a separate partition for userspace (like Ubuntu Touch), this tool will allow you to move some data (safely) from your rootfs into your userspace to recover some space on the rootfs.
• Page: NVRAM - on mobile devices flashed with Linux, if NVRAM partition was accidentally damaged during flashing process, some important hardware information will be missing, and will cause problems in many user scenarios.
  • Wifi profiles - with broken NVRAM, phone will no longer have fixed MAC address for the wifi interface, and a random MAC will be assigned at boot time. Since wifi profiles are stored in a way that refers to MAC address, they will not remain valid between boots (or even between powering the wifi device on and off). As a consequence OS will keep recreating profiles for wifi networks that were already previously created. This function will allow to clean up all the duplicate wifi profiles, and update all profiles to the most current MAC address assi gned to your wifi device.