Question about re-flashing a OnePlus Nord N200 (dre), command line installation instructions here.
Phone has been rooted with Magisk and is running /e/os. I want to erase everything including the system and re-install clean with the same /e/os image. Where in the instructions would I need to pick up the install?
In other words do I need start at the “Flashing additional partitions” section to re-flash the boot image back to stock. Or Is it better to un-root the device from the Magisk app and start at “Format the device” in the instructions.
unrooting makes no difference, just flash the partition as you described. I understand you do not want to preserve the userdata partition? then format. You could try to boot with the old userdata and if doesn’t boot to lockscreen, format
In your case, flashing only the original /e/ boot.img using fastboot should be enough, but reflashing the entire /e/OS (including the boot.img) using recovery is a safe solution