As explained in the slashdot story from 3.5 hours ago
A reddit poster offered this, in his link Lenovo says the dev team is working on it:
""[–]0xFFFFFF 89 points 7 hours ago*
Levono is aware of the issue and fixing it: https://forums.lenovo.com/t5/L...
It is on hackernews, where people are being rational and theorizing that this is not microsofts fault. More like best-buy rep doesn't know what he talks about and the SSD doesn't have support drivers in linux kernal.. Or lenova messed up their bios implementation.
Luckily we have the reddit witchhunt in full force, so we can make uninformed rants!
Note: Every single previous similar scenario about linux being locked out has not been microsofts fault, which is why people are sceptical that this is the case this time..
I also have a Signature Edition laptop, it runs linux fine..""
The Lenovo link has an official post saying:
"Re: Yoga 900-13ISK2 - BIOS update for setting RAID mode for missing hard drive on linux install Options
07-27-2016 10:04 AM
Thank you for confirming it is still not possible to install Linux on Yoga 900-13ISK2 systems.
This issue has been escalated to the Development team. I am unable to offer a timeframe for fix at this stage in the investigation. With previous cases, BIOS fixes have been delivered anywhere from several weeks to several months.
I will post again when I have more information on the investigation."