Re: Debian 12 installation - installation USB stick boots to grub prompt
On Mon, Nov 04, 2024 at 08:53:02AM -0500, Stefan Monnier wrote:
> > I suspect that this is why, when I boot from the USB stick in BIOS
> > compatibility mode the resulting installation doesn't work.
>
> Last time I did an install on a UEFI machine (most of my machines are
> too old, and of the two that aren't, one is running Coreboot 🙂),
> I found out that if the installation media is booted in "legacy BIOS"
> mode, then it can't do an install that boots via UEFI.
> IOW I had 3 choices:
>
> - Always boot using legacy BIOS mode.
> - Always boot using UEFI.
> - Boot the install using legacy BIOS, then manually change the install
> to use grub-efi, then reboot into my EFI config to "activate" the
> right `.efi` installed into the EFI partition.
>
> I started with the first choice, and then a few months later went
> through the trouble of the third which required more fiddling and
> reboots than I care to admit.
>
I don't seem to get any choice.
If I boot from the USB stick (isohybrid image) in Legacy mode then it
all **appears** to work, installation completes, but then the system
won't boot.
I don't see how I can opt to either "Always boot using legacy BIOS
mode" or "Always boot using UEFI".
How would I "Boot the install using legacy BIOS, then manually change
the install to use grub-efi", I can't see anywhere in the installation
process that would allow me to do this.
--
Chris Green
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