How to recognize M.2 2280 NVMe SSD in the Bios as a boot device in youyeetoo X1 SBC?

1.Prepare Ubuntu system by USB disk, please refer to wiki: Install the Ubuntu system | youyeetoo wiki

  1. Need to burn the Ubuntu image to NVMe SSD successfully, otherwise the BIOS will fail to recognize M.2 device.
    (important note: you need to format emmc first, otherwise it may cause failure during the installation process, please follow our wiki URL above.)

  2. Unplug USB disk and boot up the board again,then you will find M.2 device in BIOS as below.

Attach a video for reference.
Test Video