[gentoo-user] 7. Configuring the Kernel

[Thufir]

I'm currently getting error 15 from GRUB, of the "Code Listing 4.2: Grub 
Output - Booting an Entry" variety.  I can boot into either Gentoo or 
Fedora, but not into Gentoo with the new kernel.

The Gentoo doc's say to "First, verify that the root and setup lines you 
have used are correct."  I don't know how to verify that the root and 
setup lines are correct.  The only difference between entries for the two 
Gentoo kernels are the kernels specified in GRUB.  The /boot/ partition 
would look to be (hd1,0) and the root partition would look to be /dev/
hdb3; at a minimum these work for the genkernel so should work for the 
new kernel.

Perhaps it's a naming convention?  I gave the kernel a name meaningful to 
me, not knowing what other name to give it version wise.  I can always 
recompile the kernel if necessary.  Could it be a modules issue?  I 
didn't understand that step of configuring the kernel.  However, it might 
be something else, as it would seem to me that it would still at least 
*start* to boot and not give this particular error:

"Code Listing 4.2: Grub Output - Booting an Entry

Booting 'gentoo Linux'

root (hd0,0)
Filesystem type is ext2fs, partition type 0x83
kernel (hd0,0)/boot/kernel-2.4.20 root=/dev/hda3 vga=792

Error 15: File not found
Press any key to continue..."

although some of the particulars are different.


Here's what I have so far:


arrakis ~ # 
arrakis ~ # cat /boot/grub/grub.conf
default 0
timeout 30
splashimage=(hd1,0)/grub/splash.xpm.gz


title=Gentoo Linux with ALSA
        root (hd1,0)
        kernel /kernel-has-alsa root=/dev/hdb3 

title=Gentoo Linux
        root (hd1,0)
        kernel /kernel-genkernel-x86-2.6.19-gentoo-r5 root=/dev/ram0 
init=/linuxrc ramdisk=8192 real_root=/dev/hdb3 
        initrd /initramfs-genkernel-x86-2.6.19-gentoo-r5

title Fedora (2.6.21-1.3228.fc7)
       root (hd0,1)
       kernel /vmlinuz-2.6.21-1.3228.fc7 ro root=LABEL=/ rhgb quiet
       initrd /initrd-2.6.21-1.3228.fc7.img
arrakis ~ # 
arrakis ~ # cat /boot/grub/grub.conf.1 
default 0
timeout 30
splashimage=(hd1,0)/grub/splash.xpm.gz

title=Gentoo Linux
root (hd1,0)
kernel /kernel-genkernel-x86-2.6.19-gentoo-r5 root=/dev/ram0 init=/
linuxrc ramdisk=8192 real_root=/dev/hdb3 
initrd /initramfs-genkernel-x86-2.6.19-gentoo-r5

title=Gentoo Linux 2
root (hd1,0)
kernel /kernel-has-alsa root=/dev/ram0 init=/linuxrc ramdisk=8192 
real_root=/dev/hdb3 
initrd /initramfs-genkernel-x86-2.6.19-gentoo-r5


title Fedora (2.6.21-1.3228.fc7)
       root (hd0,1)
       kernel /vmlinuz-2.6.21-1.3228.fc7 ro root=LABEL=/ rhgb quiet
       initrd /initrd-2.6.21-1.3228.fc7.img
arrakis ~ # 
arrakis ~ # 
arrakis ~ # ll /boot/
total 11033
-rw-r--r-- 1 root root  980149 Apr 21  2007 System.map-genkernel-
x86-2.6.19-gentoo-r5
lrwxrwxrwx 1 root root       1 Jul 26 02:45 boot -> .
drwxr-xr-x 2 root root    1024 Nov 17 01:21 grub
-rw-r--r-- 1 root root 5455004 Apr 21  2007 initramfs-genkernel-
x86-2.6.19-gentoo-r5
-rw-r--r-- 1 root root 2137705 Apr 21  2007 kernel-genkernel-x86-2.6.19-
gentoo-r5
-rw-r--r-- 1 root root 2658736 Nov 16 23:52 kernel-with-alsa
drwx------ 2 root root   12288 Jul 26 02:36 lost+found
arrakis ~ # 
arrakis ~ # 
arrakis ~ # mount
/dev/hdb3 on / type ext3 (rw,noatime)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec)
udev on /dev type tmpfs (rw,nosuid)
devpts on /dev/pts type devpts (rw,nosuid,noexec)
/dev/hdb1 on /boot type ext2 (rw)
none on /dev/shm type tmpfs (rw)
/dev/mapper/VolGroup00-LogVol00 on /mnt/VolGroup00/LogVol00 type ext3 
(rw,noexec,nosuid,nodev)
usbfs on /proc/bus/usb type usbfs 
(rw,noexec,nosuid,devmode=0664,devgid=85)
arrakis ~ # 
arrakis ~ # cat /etc/gentoo-release 
Gentoo Base System release 1.12.9
arrakis ~ # 
arrakis ~ # date
Sat Nov 17 03:49:42 PST 2007
arrakis ~ # 
arrakis ~ # 





thanks,

Thufir

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