Booting Ubuntu on a UEFI computer

[Tom H]

On Mon, Feb 19, 2018 at 3:11 PM, Bret Busby <bret.busby at gmail.com> wrote:
>
> The boot sequence apparently, was required to be disrupted (according
> to the original poster,
>
> "
> That was the problem.  With CSM enabled the first item in the boot
> menu was the CD in legacy mode.  The CD in EFI mode was the fourth
> entry.  This required me to hold the Esc key when I power on to get
> the boot menu and select the EFI CD to install Ubuntu.
> "
>
> thus, requiring the boot sequence to be disrupted, in order for him to
> access the UEFI version of the installation, rather that the
> LegacyBIOS version of the installation, to which the boot sequence,
> apparently, defaulted, in the absence of the boot sequence disruption.

I've never enabled CSM. However, I'd expect to have to boot a CD/DVD
in legacy mode with it enabled. If the Ubuntu installer is behaving
differently, it'd be good to file a bug report.