This laptop has Secure Boot enabled by default. To start the installer you need to disable it in the UEFI. Then you can just boot the installer in UEFI mode and just install like a normal UEFI system.
The appearance of the BIOS is pretty simple and not very colorful, so it might work well with OCR software.
The device has one power button. This only works when the device is not in tabled mode.
Tablet mode and orientation sensors
The Sensor Fusion Hub seems not to be working at all (tested with kernel 5.16.5-arch1-1). No libinput events seem to be triggered by folding the display over.