Solve the forced UEFI installation when installing the ubuntu system
When installing the win10+ubuntu16.04 dual system recently, the following text appeared: The
machine started the installer in uefi mode, but there seems to be a system that uses bios compatibility mode. If you continue to install debian in uefi mode, it may be very difficult to restart systems in other bios modes. If you want to install in uefi mode and restart the existing system unintentionally, there is a mandatory option here. If you want to keep the existing system bootable, do not choose to force uefi to install.
I searched for a lot of solutions, but I couldn't solve them correctly. By coincidence, I tried a solution to this problem:
I turned on my dell laptop and pressed F12, entered the BIOS settings, found under System Configuration, and selected SATA Operation, and changed the hard drive startup mode to AHCI .
If you install Ubuntu16.04 again, there will be no pop-up window and you can install it correctly.
(PS: The first time I write an article, the pictures are all taken by mobile phones, please forgive me)