Re: Pass parameters to kernel when using chainloader method.

[Pascal Hambourg]

Le 25/12/2020 à 03:02, Hongyi Zhao a écrit :
> On Thu, Dec 24, 2020 at 10:34 PM Pascal Hambourg <pascal@plouf.fr.eu.org> wrote:
> > Le 24/12/2020 à 14:16, Hongyi Zhao a écrit :
> > > When using chainloader method, how can I pass parameters to kernel?
> >
> > What kind of chainloading ?
> >
> > With EFI stub chainloading, you can append kernel parameters to the
> > command line :
> >
> > chainloader /EFI/stub/vmlinuz initrd=/EFI/stub/initrd.img root=...
>
> Do you mean I can use the following form?:
>
> chainloader ... nomodeset ...

Yes.

> > With BIOS chainloading, I'm afraid you cannot pass parameters.
>
> Why?

AFAIK BIOS chainloading just loads a 512-byte boot sector which does not 
take any parameters, unlike an EFI executable or kernel image.