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On systems which support multiple boot platforms such as BIOS and EFI, it makes no sense to show menu entries which are not supported by the current boot platform. Menu entries generated from os-prober "chain" boot type use boot sector chainloading which is supported on PC BIOS platform only. Show "chain" menu entries only if boot platform is PC BIOS. Show "efi" menu entries only if boot platform is EFI. This is aimed to allow os-prober to report both EFI and PC BIOS boot loaders regardless of the current boot mode on x86 systems which support both EFI and legacy BIOS boot, in order to generate a config file which can be used with either BIOS or EFI boot. Signed-off-by: Pascal Hambourg <pascal@plouf.fr.eu.org> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This is GRUB 2, the second version of the GRand Unified Bootloader. GRUB 2 is rewritten from scratch to make GNU GRUB cleaner, safer, more robust, more powerful, and more portable. See the file NEWS for a description of recent changes to GRUB 2. See the file INSTALL for instructions on how to build and install the GRUB 2 data and program files. See the file MAINTAINERS for information about the GRUB maintainers, etc. If you found a security vulnerability in the GRUB please check the SECURITY file to get more information how to properly report this kind of bugs to the maintainers. Please visit the official web page of GRUB 2, for more information. The URL is <http://www.gnu.org/software/grub/grub.html>. More extensive documentation is available in the Info manual, accessible using 'info grub' after building and installing GRUB 2. There are a number of important user-visible differences from the first version of GRUB, now known as GRUB Legacy. For a summary, please see: info grub Introduction 'Changes from GRUB Legacy'