Where to find initrd .img and

satimis

Hi folks,

Installation of LFS 6.1 has been finished.  Now I'm going to edit /etc/grub.conf of the FC3 Host making dual boot at starting the PC.  

I found LFS Kernel = lfskernel-2.6.11.12

Under
The path to the kernel image........
On 8.3. Linux-2.6.11.12
http://www.linuxfromscratch.org/lfs/view/stable/chapter08/kernel.html

Where can I find its initrd .img and the kernel parameter.

TIA

B.R.
satimis

druggo

use mkinitrd to create.

blackwolf

the initrd.img is not needed for LFS. In this section, the initrd is for your host system. the initrd can be found in the /boot of you host system.
you can find it by:
#cd /mnt
#mkdir hostroot
#mount /dev/hda3 /mnt/hostroot          (change /dev/hda3 to the root filesystem of you host system)
#cd hostroot
#cd boot
#ls
you can find the file kernel-..., and initrd-...
then:

#cat >> /boot/grub/menu.lst << "EOF"
>title Red Hat
>root (hd0,2)                       (change hd0,2 to you hostsystem's root)
>kernel /boot/kernel-2.4.20 root=/dev/hda3      (change /dev/hda3 to you hostsystem's root, kernel-2.4.20 to the filename you found in previous step)
>initrd /boot/initrd-2.4.20     (change initrd-2.4.20 to the filename you found in previous step)
>EOF

blackwolf

the initrd.img is not needed for LFS. In this section, the initrd is for your host system. the initrd can be found in the /boot of you host system.
you can find it by:
#cd /mnt
#mkdir hostroot
#mount /dev/hda3 /mnt/hostroot          (change /dev/hda3 to the root filesystem of you host system)
#cd hostroot
#cd boot
#ls
you can find the file kernel-..., and initrd-...
then:

#cat >> /boot/grub/menu.lst << "EOF"
>title Red Hat
>root (hd0,2)                       (change hd0,2 to you hostsystem's root)
>kernel /boot/kernel-2.4.20 root=/dev/hda3      (change /dev/hda3 to you hostsystem's root, kernel-2.4.20 to the filename you found in previous step)
>initrd /boot/initrd-2.4.20     (change initrd-2.4.20 to the filename you found in previous step)
>EOF

satimis

Hi blackwolf,

Tks for your advice.

Hereunder is /etc/grub.conf of the FC3 Host
[code:1]#boot=/dev/hda
default=0
timeout=15
splashimage=(hd0,0)/grub/splash.xpm.gz
# hiddenmenu
title Fedora Core (2.6.12-1.1372_FC3)
        root (hd0,0)
        kernel /vmlinuz-2.6.12-1.1372_FC3 ro root=LABEL=/ rhgb quiet
        initrd /initrd-2.6.12-1.1372_FC3.img
title Fedora Core (2.6.11-1.35_FC3)
        root (hd0,0)
        kernel /vmlinuz-2.6.11-1.35_FC3 ro root=LABEL=/ rhgb quiet
        initrd /initrd-2.6.11-1.35_FC3.img[/code:1]
I'm going to add LFS kernel here so that LFS can be booted if selected at start[code:1]#boot=/dev/hda
default=0
timeout=15
splashimage=(hd0,0)/grub/splash.xpm.gz
# hiddenmenu
title Fedora Core (2.6.12-1.1372_FC3)
        root (hd0,0)
        kernel /vmlinuz-2.6.12-1.1372_FC3 ro root=LABEL=/ rhgb quiet
        initrd /initrd-2.6.12-1.1372_FC3.img
title Fedora Core (2.6.11-1.35_FC3)
        root (hd0,0)
        kernel /vmlinuz-2.6.11-1.35_FC3 ro root=LABEL=/ rhgb quiet
        initrd /initrd-2.6.11-1.35_FC3.img
title LFS (lfskernel-2.6.11.12)
root (hd0,5)
kernel /lfs_kernel ro root=/dev/hda5 lfs_kernel_parameter
initrd /lfs_initrd.img[/code:1]
LFS is on /dev/hda6

Please advise where can I find those information, lfs_kernel, lfs_kernel_parameter, etc.   Is it the information of LFS or the FC3 Host.

TIA

B.R.
satimis

blackwolf

For the LFS, after you compile the kernel, you must copy the kernel... from your source directory to /boot(/mnt/lfs/boot).
[code:1]cp arch/i386/boot/bzImage /boot/lfs_kernel
cp System.map /boot/System.map
cp .Config /boot/Config
[/code:1]
then in the grub.conf, add
[code:1]
title LFS (lfskernel-2.6.11.12)
root (hd0,5)
kernel /boot/lfs_kernel ro root=/dev/hda6
[/code:1]

satimis

Hi blackwolf,

Tks for your advice.

For the LFS, after you compile the kernel, you must copy the kernel... .

I completed follows;

8.3.1. Installation of the kernel
cp arch/i386/boot/bzImage /boot/lfskernel-2.6.11.12
cp System.map /boot/System.map-2.6.11.12
cp .config /boot/config-2.6.11.12

I left out running "chown -R 0:0 on the linux-2.6.11.12 directory".  Whether it matters?

then in the grub.conf, add........

Then I manually edited /mnt/lfs/etc/grub.conf

adding:[code:1]
title LFS 6.1 (2.6.11.12)
        root (hd0,5)
        kernel /boot/lfskernel-2.6.11.12 ro root=/dev/hda6 vga=795[/code:1]I think this step should be mentioned on LFS 6.1 book.  I could not discover it.

B.R.
satimis

linky_fan

I left out running "chown -R 0:0 on the linux-2.6.11.12 directory". Whether it matters?

NO matter.

I think this step should be mentioned on LFS 6.1 book. I could not discover it.

http://www.linuxfromscratch.org/lfs/view/stable/chapter08/kernel.html

This page and the next page.

satimis

Hi linky_fan

<snip>

http://www.linuxfromscratch.org/lfs/view/stable/chapter08/kernel.html

This page and the next page.

I went through both pages.  From my Notes it indicates;[code:1]grub> root (hd0,5) [Enter]

Error 21: Selected disk does not exist

grub> setup (hd0) [Enter]

Error 12: Invalid device requested

grub> root

Tab no function[/code:1]There was problem here unsolved.  The HD is connected to Primary IDE as master withoug SLAVE attacehed to its cable.  Therefore I havc to edit /mnt/lfs/etc/grub.conf manually.

B.R.
satimis

blackwolf

type "root (hd0, " and press Tab, you can see all the partition of hd0, and make sure you select the correct partition of the LFS.

satimis

Hi blackwolf,

type "root (hd0, " and press Tab......

Sorry, no output.  I tried before as;

root  (pressing TAB, no output)
root (hd  (pressing TAB, no output)
root (h  (pressing TAB, output=(hd)

On my previous post, I posted
"The HD is connected to Primary IDE as master without SLAVE attacehed to its cable."

which was just for your information, if suspecting cable connection problem.  

On searching Internet I found postings concerning this problem but without solution and the threads just hanging there.

B.R.
satimis

blackwolf

In my PC, One harddisk, One cdrom, One FD,
grub>root (       (press TAB)
Possible disks are:   fd0, hd0
grub>root (hd0,     (press TAB)
Possible partitions are:
      Partition num: 0 ,  Filesystem type is ext2fs, partition type 0x83
      Partition num: 1 ,  Filesystem type unknown, partition type 0x82
grub>root (hd0,0)

I'm sorry I have a mistake on
[quote:63c26bf149="blackwolf"]For the LFS, after you compile the kernel, you must copy the kernel... from your source directory to /boot(/mnt/lfs/boot).
[code:1]cp arch/i386/boot/bzImage /boot/lfs_kernel
cp System.map /boot/System.map
cp .Config /boot/Config
[/code:1]
then in the grub.conf, add
[code:1]
title LFS (lfskernel-2.6.11.12)
root (hd0,5)
kernel /boot/lfs_kernel ro root=/dev/hda6
[/code:1][/quote]
It must be /boot/grub/menu.lst but not grub.conf, sorry.

satimis

Hi blackwolf,

In my PC, One harddisk, One cdrom, One FD,........

Tried as follows on FC3 Host;

# grub [Enter][code:1]
GNU GRUB  version 0.95  (640K lower / 3072K upper memory)

[ Minimal BASH-like line editing is supported.  For the first word, TAB
   lists possible command completions.  Anywhere else TAB lists the possible
   completions of a device/filename.]

grub> r  (pressed TAB)
Possible commands are: read reboot root rootnoverify

grub> root (pressed TAB)
Possible commands are: root rootnoverify

grub> root[/code:1]

.......It must be /boot/grub/menu.lst but not grub.conf.

On FC3 Host
[root@localhost satimis]# mount /dev/hda6 /mnt/lfs
[root@localhost satimis]# cat /mnt/lfs/boot/grub/menu.lst[code:1]# Begin /boot/grub/menu.lst

# By default boot the first menu entry.
default 0

# Allow 30 seconds before booting the default.
timeout 30

# Use prettier colors.
color green/black light-green/black

# The first entry is for LFS
title LFS 6.1
root (hd0,5)
kernel /boot/lfskernel-2.6.11.12 root=/dev/hda6
title Windows
rootnoverify (hd0,0)
chainloader +1
[/code:1]I did not performed this step.  Is it mentioned somewhere.

Tks

B.R.
satimis

blackwolf

what happend when you type "root (" and press TAB?

satimis

[quote:848ee5c9d9="blackwolf"]what happend when you type "root (" and press TAB?[/quote]grub> root (hd0,

B.R.
satimis