12-07-2017 01:55 AM
Hi. I've got a Yoga 720-12IKB (81B5003QUS) with the latest BIOS update (5GCN20WW). I would like to enable Legacy BIOS mode, but the "Boot Mode" field in the BIOS configuration only allows me to select UEFI. Is there any way to fix this and use Legacy BIOS?
01-30-2018 09:09 AM
I've read some times ago that Intel would soon enforce no CSM module in UEFI BIOS. It's possible, that Lenovo did intentionally disabled this option. Actually Kaby Lake CPU officialy supports only Windows 10 or Linux and both those OSes do support UEFI, so they could thought that there is no reason to keep CSM support cause the only OS that requires it, is Windows 7 and older and these OSes are officially not supported by Kaby Lake CPU and have never been. The last CPU with official support for Windows 7 was Skylake.