https://forums.lenovo.com/t5/Linux-Discussion/Yoga-900-13ISK2-BIOS-update-for-setting-RAID-mode-for-missing/m-p/3436041#M8356
Lenovo Statement on Linux Support for Yoga
Lenovo, as always, is focused on bringing value to the PC user, and creating unique and innovative form factors such as Yoga. Our consumer Windows PCs are specifically designed for and extensively tested on Windows 10. Yoga 900 / 900S with their 360 degree hinges are specifically designed to maximise the touch functionality of Windows 10. Our Yoga design requires very specific, complex and unique drivers that require even greater amounts of testing, to ensure class-leading performance with Windows 10. To support our Yoga products and our industry-leading 360-hinge design in the best way possible we have used a storage controller mode that is unfortunately not supported by Linux and as a result, does not allow Linux to be installed. Beyond the controller setup limitation, other advanced capabilities of the Yoga design would likely not work with current Linux offerings.
Monopolistic sheep happens
"a storage controller mode" is a pair of bytes, basically it is Nothing, just a marker
