How to install CoreElec or any other Elec/Kodi on Mecool M8S PRO W? I know how to run it from card, but would love to have it on internal storage
Your device can not be installed to internal because it has unknown NAND chip, sorry.
Please use the search function in future Mecool M8S Pro W - Install to Internal
Okay, then how come it’s possible to install Google TV Stock rom on internal storage but not CoreElec?
The answer to that question is already in the thread that I linked you to.
The kernel included with the Android ROM contains the NAND driver needed to boot the device, unfortunately Chinese vendors almost never release their kernel source so we are unable to add support for the NAND chip.