[SeaBIOS] Re: How to boot from DVD/CD automatically, instead of pressing a key by hand?

[Paul Menzel]

Dear Yiguang,

Am 28.02.21 um 15:22 schrieb Yiguang Chen:
> Most time, When a vm with seabios start. The bios will display such info:
>
> Seabios (version rel-1.13-0 ......)
> Machine UUID ...
>
> IPXE ..
>
> IPXE..
>
> Booting from DVD/CD...
> Press any key to boot from CD or DVD.
>
> It means that have a bootable cdrom to boot. But If we want to boot
> from cdrom, we must press any key as what the warning had said. If it
> is possible to boot from DVD/CD automatically, instead of pressing a
> key by hand?

I assume, you are using QEMU? You can configure the boot behavior, 
including the order, with the switch `-boot` [1]. One example from the 
manual is:
> # boot from CD-ROM first, switch back to default order after reboot
> qemu-system-i386 -boot once=d

Kind regards,

Paul

[1]: 
https://manpages.debian.org/buster/qemu-system-x86/qemu-system-x86_64.1.html