On 3/6/23 17:11, Michael Peters wrote:
Hi. I'm trying to figure out how to chainload one grub to another.
bios boot, not UEFI.
grub 2.06 built from source.
.
.
.
.
Is chainloading grub from one physical drive to grub on another physical
drive possible?
How is it done?
Yes, try multiboot commands to core.img in menuentries of this sort...
menuentry "Other OS 1" {
search --no-floppy --fs-uuid --set=xxxxxxxxxxxxxxxxx
multiboot /boot/grub/i386-pc/core.img
}
> That attempt based on Windows 7 example I saw.
Use ntldr command for windows.
menuentry "Windows" {
insmod part_msdos
insmod ntfs
search --no-floppy --fs-uuid --set=xxxxxxxxxxxxxxx
ntldr /bootmgr
}
*But* I think the problem is the OS you are trying to boot up is in a
GPT disk, not a msdos disk
as shown by your entries you gave using PARTUUID which can only apply to
GPT disks.
# filesystem root=/dev/sda2
menuentry "GNU/Linux, Linux 6.1.15-lfs-11.3" {
linux /vmlinuz-6.1.15-lfs-11.3 root=PARTUUID=d92d2b64-02 ro
}
menuentry "GNU/Linux, Linux 6.1.14-lfs-11.3" {
linux /vmlinuz-6.1.14-lfs-11.3 root=PARTUUID=d92d2b64-02 ro
}
Unless you have set up your GPT disk to have a *flagged* BIOS Boot
partition, booting in bios-legacy will be a problem.
