Of course Reddit has gone off without anyone actually confirming what the issue is. Microsoft would be smart to come out with a statement on this if it picks up any steam.
One user Bownairo confirmed that changing the drive to AHCI mode did fix the problem by allowing the drive to be recognized in Linux, after manually flashing a modded BIOS by soldering chip programming hardware:
I wonder what it'll take to get Linux to see the drive in RAID mode.
djpohly and the BIOS hackers deserve some credit too for their REing:
https://www.bios-mods.com/forum/Thread-Request-Lenovo-Yoga-9...
Conditional flag locking users out of the Advanced settings page (with the RAID settings) of the BIOS, as shown in disassembled code:
https://lnv.i.lithium.com/t5/image/serverpage/image-id/76843...
Now, of course the rep might be mistaken. We need official clarification from someone higher up. But we won't get that until we go off on one and this goes viral.
It is not up to the rest of the world to divine meaning from Lenovo's PR policy. If they are happy to allow nitwits to make public statements like that, they should be fully prepared to handle the fallout.
> 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.
You have to go there to see it for yourself. Imagine the way that HN is paranoid of the US government, but then double that and apply it to Microsoft, which makes even less sense. To them, MS is the boogeyman that will stop at nothing to prevent them from being the glorious 1% that doesn't use Windows. It's still the 90's on /r/linux, in many many ways.