If you’re familiar with this process on a T8-S, it is exactly the same procedurally.

For everyone else, please watch a video

4 minutes 54 second is the relevant part (the rest is the How To Video for the T8-S Plus)
We’re interested in pausing at around 8 minutes 26.
Format internal HDD is the menu entry you want.

PLEASE MAKE SURE YOU REMOVE ALL USB STORAGE DEVICES BEFORE CLICKING THIS OPTION.
openELEC/Linux does not differentiate between internally connected and USB connected drives.

Click this menu entry and confirm your choice.
Continue to watch video after that to see how to switch back to Android if you prefer.
After the process has finished the drive will show in openELEC and Android (I’d recommend ES File Explorer, expand the LOCAL menu on the left). In the openELEC OS, it will be in the \VAR\MEDIA area (starting from root).

  • Laurence Dagley

    I may be missing something but no where in this video does it show how to format a internal hand drive ?

    • DroidBOX

      4 minutes 54 second is the relevant part (the rest is the How To Video for the T8-S Plus)
      We’re interested in pausing at around 8 minutes 26.
      Format internal HDD is the menu entry you want.

      • Laurence Dagley

        But I can’t find how to format mine in libreelec as all the videos are for openelec it finds my hdd in system but not in libreelec system like in video for openelec ?

        • DroidBOX

          See our email for details, but for other visitors to this post before we get a video online:

          In short, on Android go to Settings, click down once and then scroll to the right to More Settings. Click this option and then choose Storage & USB. On this screen you should see the HDD. Click on the HDD and in the top right there will be 3 vertical dots, click on this then choose Format as Portable Storage and follow the prompts. The HDD will be useable in both Android and LibreELEC.

          • Laurence Dagley

            Fat 32 still can’t find it in android so now trying ext2

            Sent from my iPad