> It happened again right now, on another G40-30 Lenovo laptop, running
> Windows 10 and Ubuntu 16.04, both in legacy mode. As soon as we inserted
> an Ubuntu 17.10 live USB, the boot setup had the USB listed twice. One
> in legacy and another as EFI (I repeat, the OSs on that laptop are
> installed in legacy mode). By selecting to boot the live USB which was
> listed as EFI, it booted fine. We did not install the new OS, but after
> shutting down the laptop, the BIOS refused to save any changes and also
> refused to read that same USB flash drive in boot options. There has to
> be something very seriously wrong here.
Given the evidence of this to date, I would not suggest that anyone do
further investigation on this problem with their own hardware that would
require expensive professional recovery. A probable fix is in progress for
the kernel package.
> It happened again right now, on another G40-30 Lenovo laptop, running
> Windows 10 and Ubuntu 16.04, both in legacy mode. As soon as we inserted
> an Ubuntu 17.10 live USB, the boot setup had the USB listed twice. One
> in legacy and another as EFI (I repeat, the OSs on that laptop are
> installed in legacy mode). By selecting to boot the live USB which was
> listed as EFI, it booted fine. We did not install the new OS, but after
> shutting down the laptop, the BIOS refused to save any changes and also
> refused to read that same USB flash drive in boot options. There has to
> be something very seriously wrong here.
Given the evidence of this to date, I would not suggest that anyone do
further investigation on this problem with their own hardware that would
require expensive professional recovery. A probable fix is in progress for
the kernel package.