I would very much like to use Mender to manage a fleet of RPi4 things that will sporadically connect via cell modem and (less often) Wifi. SD cards are too slow for a satisfactory uesr experience, and so we are using fast USB devices. The delta update capability is important.
I’ve spent the past week or two learning how to connect devices to Mender Hub, creating and updating via artifacts, and mender-converting our .img files.
What I can’t figure out how to do is to get the RPi4 to boot from a converted img file that is copied to the USB stick using the RPI imager. I’ve tried adding a 'MENDER_STORAGE_DEVICE=/dev/sda ’ --config file to the mender-convert options with no success.
I would think lots of folks are (or want to be) booting RPis from USB, but can’t find much about doing this other than Pi3 USB boot support.
Any help would be greatly appreciated.