ChromeOS Flex installation fails


Getting error "the installer couldn't find a valid destination" during the ChromeOS Flex installation. 


  • Lenovo 300e Gen2 (AMD) with 64GB eMMC.


The variation of this model, which is listed but not with an EMMC/AMD configuration, is not supported. 

The list can be found in this article.


This variant has an EMMC HHD and unfortunately for some devices Flex may not install because, in most cases means that the HDD that Flex is trying to install on, either considers the root drive too small, or does not recognize the internal drive at all. It's filtering out the current "root" disk, which means the USB so it's finding 1 disk (the USB), and ruling that out and then left w/ 0, so the internal drive must not be recognized.