On September 21, 2016, Lenovo confirmed that their Yoga series is not meant to be compatible with Linux operating systems, that they know it is impossible to install Linux on some models, and that it is not supported. This came in the wake of media coverage of problems that users were having while trying to install Ubuntu on several Yoga models, including the 900 ISK2, 900 ISK For Business, 900S, and 710, which were traced back to Lenovo disabling and removing support for the AHCI storage mode for the device's Solid State Drive in the computer's BIOS, in favor of a RAID mode that is only supported by Windows 10 drivers that come with the system. Lenovo has since released an alternative firmware that has restored the AHCI mode to the drive controller to allow installation of Linux operating systems.