I think I've solved the mystery of the non-bootable USB chromebook
USB stick that works:> Mode Sense: 23 00 00 00
USB stick that doesn't:> Mode Sense: 43 00 00 00
despite all the progress I made, a new issue has popped up which sets me back far...
rolling back to what I *know* works did the trick.
also fyi, the chromeos-exynos5 config doesn't come with AES-XTS support but that's what LUKS will default to. Use --cipher aes-ctr-plain64
TIL, if CONFIG_IKCONFIG=m
# modprobe configs
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