[wrxtasy]

https://wiki.odroid.com/odroid-n2/os_images/petitboot
And I suggest you do a Petitboot update before doing anything else.

NOTE: Just did an update to Petitboot and I cannot for the life of me get Petitboot to recognise the microSDHC card that has a working CE image on it.

EDIT: Got it working - for reference Petitboot spiboot-2020005.img must be used. See HardKernel forums.
Also - ceemmc - does NOT work with the CoreELEC N2 and eMMC.

I still cannot recommend Dual Boot on the N2 - there simply is too much stuffing around vs regular AMLogic Android devices, and there are incompatibilities and gotchas - and I'm still having issues even with Petitboot working.