[email protected] wrote:
hi,
i'm using 8.0 lfs-svn-20170723 and i'm at 8.3.1 installation of the kernel
... finished with it actually.
the machine on which i'm installing lfs also runs a devuan system, and i'd
like to be able to boot either.
i followed the instructions in 8.3.1 for the bind mount of the existing
/boot partition
root:/sources# ls /boot
System.map-3.16.0-4-amd64 lost+found
System.map-4.12.3 memtest86+.bin
config-3.16.0-4-amd64 memtest86+_multiboot.bin
config-4.12.3 vmlinuz-3.16.0-4-amd64
grub vmlinuz-4.12.3-lfs-SVN-20170723
initrd.img-3.16.0-4-amd64
root@devuan:/home/jfl# ls /boot
System.map-3.16.0-4-amd64 lost+found
System.map-4.12.3 memtest86+.bin
config-3.16.0-4-amd64 memtest86+_multiboot.bin
config-4.12.3 vmlinuz-3.16.0-4-amd64
grub vmlinuz-4.12.3-lfs-SVN-20170723
initrd.img-3.16.0-4-amd64
the first is lfs. both seem identical.
can i just re-run grub-mkconfig from devuan and have it add lfs to grub's
repertoire?
although the grub.cfg file for lfs in the book is simple enough,
recreating the devuan grub.cfg seems not so simple.
grub-mkconfig produces a LOT of unneeded bloat in grub.cfg.
I suggest copying the current (devuan) grub.cfg to a backup:
cd /boot/grub
cp grub.cfg grub.cfg.devuan
Now create the lfs version of grub.cfg, but add one more entry:
menuentry "Linux devuan /dev/sda5" {
linux /vmlinuz-3.16.0-4-amd64 root=/dev/sda5 ro
initrd /initrd.img-3.16.0-4-amd64
}
Of course, adjust the partition for your system. Also you may need to add
'insmod gzio' to the modules. Also note that when using a separate /boot
partition, the files are found in the root of that partition so the
location of the files is /filename, not /boot/filename as in the example
in the book.
If a problem occurs, co can always restore the original grub,cfg,
-- Bruce
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