(11-23-2017, 01:10 PM)freebsd Wrote: My guess is you would have to re-compile the kernels to pick the different slice on the flash AND a layer to boot up enough to give you a screen/keyboard to say 'what is the blob you want to load'. Now perhaps someone would write such code for an IoT field upgrade model - 'Boot from this old version/boot the new version' and then that could get re-purposed for what you are looking for or someone wanting:
1) coreboot https://www.coreboot.org/ARM running on the platform
2) NetBSD's model of doing a device tree
https://www.cnx-software.com/2017/07/11/...h3-boards/
The short version is: ARM is not the same as the bios model that brought you dual booting.
that noobs companion or the wd hd rpi multi boot code could maybe be modified to set up pine64 devices for multi-boot option.
berryboot source is on github so you could check that out to determine if hack is possible