How to install Devuan or almost anything Debian based on Orange Pi PC/One/Lite/Whatever
sdcard will only have one partition - / aka rootfs. We will borrow kernel, device trees, u-boot, headers and few scripts from Armbian project, so we won't have to compile anything.
You can setup separate /boot partition and encrypted LVM if you want. This guide will only cover first case, but if you want to try encryption you should know these kernel cmdline arguments.