Bret Busby a écrit : > > So, now, what happens when one operating system is installed via > UEFI/GPT, and two are installed as BIOS/MBR, in terms of wanting to be > able to select any one of the three operating systems, to boot?
Nothing special. Depending on its settings and priorities, the firmware will choose one scheme. If a firmware boot menu is available, you may be able to choose any available boot loader. > If I try to do something, to fix it, from one of the BIOS/MBR systems, > will that eradicate the UEFI/GPT system, or, do other harm, and, > conversely, if I do something from the UEFI/GPT direction, what will > that do, to the BIOS/MBR systems? Legacy and UEFI bootloaders can co-exist on the same disk. The UEFI bootloaders are on the EFI system partition ; the legacy bootloader is in the MBR (and in a BIOS boot partition if GPT format is used). > And, can UEFI/GPT systems, see BIOS/MBR installed opperaimg systems, > and, can BIOS/MBR installed operating systems, see UEFI/GPT operating > systems? Systems, maybe [1]. Bootloaders, no. [1] The UEFI bootloader of a GNU/Linux system may be able to boot another GNU/Linux system installed in legacy mode. But it will do so by loading directly the kernel and intramfs instead of chainloading the legacy bootloader. And vice versa. A bootloader can only chainload another bootloader of the same type. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/5500cd39.1070...@plouf.fr.eu.org
