Booting a image from an SD card on a #librem5. In this case #postmarketos.
Got to play again with some work in progress code made by #librem5 developers. In this case a u-boot image that allows the #librem5 to boot from the SD cacrd. It can boot from the SD directly, but the video first I booted the #pureos image in the eMMC and then rebooted and booted #postmarketos from the SD card. Credits to the #librem5 devs and to @craftyguy for making the #pmos image for the SD card to test this :D