I recently got a Gemini PDA (WiFi). To run rooted Android and Linux (dual boot) I did the following:
- Followed the details here.
- Downloaded & unzipped Windows Flashing Tool
- Downloaded & installed Windows Drivers
- Chose my Partition setup here then downloaded
- Scatter File
- Base Firmware (ie Android)
- Linux Firmware
- Unzipped both firmwares into a dir & put scatter file in there
- Connected Gemini powered off
- Started flashing tool, selected scatter file (following this guide)
- Chose “Firmware Upgrade” & “Download”
- Powered Gemini on
- Waited. First you get a fast red progress bar (partitioning?). Then you get two slow yellow progress bars (presumably installing each OS). In total the process took 35-45 minutes.
Update: on a recent install (see step 11) this was much quicker, a couple of minutes.
- Powered on Gemini into Android (my default). To get “proper” root I installed Magisk Manager from here.
WARNING: latest Magisk Manager put my Gemini into a boot loop requiring firmware reinstall – so don’t update to latest version & allow it to rebuild!
Note I skipped backing up the NVRAM. You probably shouldn’t do that.
Then post-install I installed Linux Deploy from the play store, Arch Linux under that (into an ext4 partition on my SD card) & termux as a terminal into it.