The first boot after writing the image with win32diskimager, I got the 4 raspberry's, and then a kernel panic page of errors like these for each of the 4 cpus in my RPI2:
CPU:2 PID:0 Comm: Swapper/2 Tainted G D 4.9.22-picore-v7#1
and so forth for each ...
CPU:2 PID:0 Comm: Swapper/2 Tainted G D 4.9.22-picore-v7#1
and so forth for each ...