El 25/12/20 a les 10:36, Pascal Hambourg ha escrit: > Le 25/12/2020 à 03:02, Hongyi Zhao a écrit : >> On Thu, Dec 24, 2020 at 10:34 PM Pascal Hambourg >> <pas...@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.
As I did understand, and please make me the right correction (or link documentation): BIOS calls MBR MBR loads/calls GRUB GRUB chainloads to disk sector where kernel begins. Last step does not allow to pass parameters because GRUB just loads first 512 bytes of OS kernel?
