Digital freedom activists are up in arms over a discovery by Lenovo Yoga 900S and Yoga 710S users that you simply can't replace the pre-installed Windows 10 Signature Edition operating system with one of your choice, such as Linux. Redditor BaronHK tried installing Linux on their notebooks and couldn't, so a support ticket was raised with Lenovo to guide them to install Linux. Lenovo responded that the notebook features Windows 10 Signature Edition, and that "it has been locked as per Lenovo's agreement with Microsoft."

On the Yoga 900S and 710S, Lenovo deployed a proprietary soft-RAID setup that cannot be recognized by Linux installers. You can't even change the SATA controller mode in the BIOS setup program. Even Windows installations don't succeed without special F6_install drivers by Lenovo, and the company only provides drivers for Windows. Lenovo cannot argue that its hardware specifically requires Windows, because Live images of Linux, (such as Ubuntu) function just fine on these notebooks. It's just that you can't make your Live session permanent by installing Ubuntu on the device. Lenovo has since gone into full damage control and denial. It removed the thread from its support forums (view a cached copy), and even changed its explanation from "we blatantly admitted to anti-competitive practices that could cost us a billion-dollar class-action lawsuit" to "we simply don't have drivers for our deliberately unusual RAID setup."