NOOB; installing a second kernel and grub settings

robinBones · n00b Joined: 15 Feb 2005 Posts: 22

Hi guys... I have a new gentoo installation that I want to install gnome on it.
emerging gnome says that I need the 2.6 Kernel. I emerged the newer kernel using 'emerge gentoo-sources', and configured it using 'genkernel all'.
I have the new kernel, and not quite sure what the grub.config should look like.

This is my complete grub.config file
------------------------------------------------------
default 0
timeout 30
splashimage=(hd0,0)/grub/splash.xpm.gz

# This section is working
title=Gentoo Linux 2.4.26-r9
root (hd0,0)
kernel /kernel-2.4.28-gentoo-r7 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_$
initrd /initrd-2.4.28-gentoo-r7

# This is what I added
title=Gentoo Linux kernel-2.6.10
root (hd0,0)
kernel /kernel-2.6.10 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_$
initrd /initrd-2.6.10

------------------------------------------------------
boot dir
------------------------------------------------------

drwxr-xr-x 4 root root 1024 Feb 19 06:20 .
drwxr-xr-x 18 root root 4096 Feb 18 07:49 ..
-rw-r--r-- 1 root root 0 Oct 27 17:45 .keep
-rw-r--r-- 1 root root 674034 Feb 18 13:56 System.map-2.4.28-gentoo-r7
-rw-r--r-- 1 root root 907745 Feb 19 06:13 System.map-2.6.10
lrwxrwxrwx 1 root root 1 Feb 18 07:46 boot -> .
drwxr-xr-x 2 root root 1024 Feb 18 16:22 grub
-rw-r--r-- 1 root root 2049644 Feb 18 14:24 initrd-2.4.28-gentoo-r7
-rw-r--r-- 1 root root 1547158 Feb 19 06:20 initrd-2.6.10
-rw-r--r-- 1 root root 1482314 Feb 18 13:56 kernel-2.4.28-gentoo-r7
-rw-r--r-- 1 root root 2002574 Feb 19 06:13 kernel-2.6.10

------------------------------------------------------
When I boot up, I get the new kernel option, but when I select it I get this error.
Mounting Filesystems
Determining root decives
The Root block device is unspecified or not detected. Please specify a device to boot, or "shell" for a shell

Thanks
Robin

tkdfighter · Posted: Sat Feb 19, 2005 6:28 pm Post subject:

Try this:

robinBones · n00b Joined: 15 Feb 2005 Posts: 22

I changed

kernel /kernel-2.6.10 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_$
to
kernel /kernel-2.6.10 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/hda3

and it worked..
I did get an error at boot time, I'm compiling gnome right now,
when it is done, I'll write down that message and post it..

Also, what exact;y does the root=/dev/ram0 do?
Is it creating a ram disk to store something?

Thanks for the reply.

tkdfighter · Posted: Sat Feb 19, 2005 7:22 pm Post subject:

Yep, /dev/ram0 is a ramdisk. I guess that you could store the kernel in it. You could also write a script that loads your favorite programs in there at startup so they load faster when you open them.
I don't use a ramdisk, and it works just fine.

tkdfighter · Posted: Sat Feb 19, 2005 7:25 pm Post subject:

I just found this with google.

angoraspruce · kernel /kernel-2.4.28-gentoo-r7 root=/dev/ram0 init=/linuxrc ramdisk=8192 real_$