After I installed Windows 8 RTM I still had two devices missing drivers. I have made a little progress
- Base System Device - was the Ricoh PCIe SDXC/MMC Host controller I used this Win 8 beta driver
- Unknown driver – seems to be the Lenovo Power Management devices. However the Win 8 Beta driver fails to install. I had to use the Windows 7 driver, installed OK and seems to show the right information in the tool tray, but in Device Manager it still says the unknown driver.
I guess I really need to wait until Lenovo ship their release drivers