And…forgive me for having an immature idea.
After backing up the eMMC data, I checked some information related to “boot/EFI”.
Then I saw a “Rademe” description: as described in the picture.
I wonder if there is any hope to boot Linux or Windows? ?
crossystem has to be run as sudo/root
ChromeOS is not bootable from UEFI, that’s just an unused remnant from ChromiumOS.