I'm trying to boot my shiny new LFS 7.2 system for the first time. I
think I followed the LFS book carefully, but I get boot errors no matter
what I try in configuring the boot script grub.cfg.
My system is an older custom one with an Intel motherboard and
processor, and three hard disks:
/dev/sda for fedora
/dev/sdb for debian
/dev/sdc for LFS
I'm using this system to play around with Linux.
In trying to figure out what's going wrong, I found an apparent conflict
between what grub manuals say and what the LFS book says about grub's
partition numbering scheme. The book says that grub numbers the
partitions starting from one, but the online info I've read says that it
starts from zero. Since I don't know better, I've tried both ways. I've
also tried different combinations of parameters in the grub.cfg file, as
shown below.
Here's the grub.cfg file set up according to the LFS book:
root:/boot/grub# cat grub.cfg
# Begin /boot/grub/grub.cfg
set default=0
set timeout=5
insmod ext2
set root=(hd2,1)
menuentry "GNU/Linux, Linux 3.5.2-lfs-7.2" {
linux /vmlinuz-3.5.2-lfs-7.2 root=/dev/sdc1 ro
}
Here are the variations I've tried, and the errors produced upon trying
to boot:
According to the LFS book and the above grub.cfg:
With set root=(hd2,1)
linux /vmlinuz-3.5.2-lfs-7.2 root=/dev/sdc1 ro
error: file '/vmlinuz-3.5.2-lfs-7.2' not found.
Several variations:
With set root=(hd2,1)
linux vmlinuz-3.5.2-lfs-7.2 root=/dev/sdc1 ro
error: invlaid file name 'vmlinuz-3.5.2-lfs-7.2'.
With set root=(hd2,0)
linux /vmlinuz-3.5.2-lfs-7.2 root=/dev/sdc0 ro
linux /vmlinuz-3.5.2-lfs-7.2 root=/dev/sdc1 ro
linux vmlinuz-3.5.2-lfs-7.2 root=/dev/sdc0 ro
linux vmlinuz-3.5.2-lfs-7.2 root=/dev/sdc1 ro
error: no such partition
Here are printouts showing relevant info about what's in the system:
# As root in the Fedora system:
[root@alan-fedora ~]# fdisk -l
. . .
Disk /dev/sdc: 500.1 GB, 500107862016 bytes
. . .
Device Boot Start End Blocks Id System
/dev/sdc1 * 2048 602111 300032 83 Linux
/dev/sdc2 602112 976773119 488085504 5 Extended
/dev/sdc5 610470 17382329 8385930 82 Linux swap /
Solaris
/dev/sdc6 17383424 59326463 20971520 83 Linux
/dev/sdc7 59328512 101271551 20971520 83 Linux
/dev/sdc8 101273600 206131199 52428800 83 Linux
/dev/sdc9 206133248 310990847 52428800 83 Linux
/dev/sdc10 310992896 520708095 104857600 83 Linux
/dev/sdc11 520710144 531195903 5242880 83 Linux
/dev/sdc12 531197952 552169471 10485760 83 Linux
/dev/sdc13 552171520 976773119 212300800 83 Linux
Here I change over to the LFS system:
[root@alan-fedora grub]# su - lfs
lfs:~$ source ~/.bash_profile
lfs:~$ su root
Password:
root:/home/lfs# mount -v --bind /dev $LFS/dev
root:/home/lfs# mount -vt devpts devpts $LFS/dev/pts
root:/home/lfs# mount -vt proc proc $LFS/proc
root:/home/lfs# mount -vt sysfs sysfs $LFS/sys
root:/home/lfs# if [ -h /dev/shm ]; then
> rm -f $LFS/dev/shm
> mkdir $LFS/dev/shm
> fi
root:/home/lfs# mount -vt tmpfs shm $LFS/dev/shm
root:/home/lfs# mount -v --bind /dev $LFS/dev
root:/home/lfs# /usr/sbin/chroot "$LFS" /tools/bin/env -i \
> HOME=/root \
> TERM="$TERM" \
> PS1='\u:\w\$ ' \
> PATH=/bin:/usr/bin:/sbin:/usr/sbin:/tools/bin \
> /tools/bin/bash --login +h
root:/#
root:/# mount -l
/dev/sdc1 on /boot type ext3 (rw)
/dev/sdc8 on /opt type ext3 (rw,user_xattr)
shm on /dev/shm type tmpfs (rw)
/dev on /dev type none (rw,bind)
root:/# cd /boot
root:/boot# ls -l
total 7376
-rw-r--r-- 1 root root 84618 Oct 28 06:41 config-3.5.2
drwxr-xr-x 4 root root 4096 Oct 28 07:57 grub
-rw-r--r-- 1 root root 2078325 Oct 28 06:41 System.map-3.5.2
-rw-r--r-- 1 root root 5359664 Oct 28 06:41 vmlinuz-3.5.2-lfs-7.2
root:/boot# cd grub
root:/boot/grub# ls -l
total 24
-rw-r--r-- 1 root root 190 Oct 28 07:57 grub.cfg
-rw-r--r-- 1 root root 1024 Oct 28 06:45 grubenv
drwxr-xr-x 2 root root 12288 Oct 28 06:45 i386-pc
drwxr-xr-x 2 root root 4096 Oct 28 06:45 locale
root:/boot/grub# cat grub.cfg
# Begin /boot/grub/grub.cfg
set default=0
set timeout=5
insmod ext2
set root=(hd2,1)
menuentry "GNU/Linux, Linux 3.5.2-lfs-7.2" {
linux /vmlinuz-3.5.2-lfs-7.2 root=/dev/sdc1 ro
}
Any help will be very much appreciated.
Alan
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