Dual booting with UEFI secure boot

soup_sam

I have a new laptop that supports UEFI secure boot. My intention is to dual boot windows and ubuntu. Over the past few days I have been researching what the best setup would be and issues I may encounter. I want to know if I were to dual boot windows (7 or 8) / Ubuntu should I be using secure boot, or can I simply turn it off via BIOS settings without any side-affects such as instability/corruption. This will be a very important machine for me,...

Originally asked by neolaser on Stack Exchange (superuser) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

Windows 7 doesn't support Secure Boot, so if you want to replace Windows 8 with Windows 7, you must disable Secure Boot. Windows 8 does support Secure Boot, and if it came pre-installed on your computer, chances are the computer is configured to use it by default. In theory, Ubuntu 12.04.2, 12.10, and 13.04 all support Secure Boot. In practice, there seem to be a lot of problem reports about this support, though, so many users end up disabling Secure Boot. My suspicion is that the problems are mostly related to the fact that Ubuntu is still using the old shim 0.1 rather than the newer shim 0.2, but I'm not positive of that. It is possible to install shim 0.2 on any EFI Linux system; see my...

Full answer by Rod Smith: https://superuser.stackexchange.com/a/622907 (CC BY-SA 4.0).

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