KERNEL PANIC [solved]

Question

After pacman -Syu (I already install some things before that)I get a:
Kernel panic -not syncing:VFS:Unable to mount root fs on unnown -block(0,0)
here is the fstab of my working mandriva;the root for arch is hda9
# This file is edited by fstab-sync - see 'man fstab-sync' for details
/dev/hda1 / ext3 defaults 1 1
/dev/hda7 /home ext3 defaults 1 2
/dev/hdc /mnt/cdrom auto umask=0,users,iocharset=iso8859-1,codepage=850,ro 0 0
/dev/hda9 /mnt/lin2 ext3 defaults 1 2
/dev/hda8 /mnt/win ext3 defaults 1 2
none /proc proc defaults 0 0
/dev/hda6 /usr ext3 defaults 1 2
/dev/hda5 swap swap defaults 0 0
this is arch's fstab:
# /etc/fstab: static file system information
# <file> <dir> <type> <options> <dump> <pass>
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs defaults 0 0
/dev/cdrom /mnt/cd iso9660 ro,user,noauto,unhide 0 0
/dev/dvd /mnt/dvd udf ro,user,noauto,unhide 0 0
/dev/fd0 /mnt/fl vfat user,noauto 0 0
/dev/hda10 swap swap defaults 0 0
/dev/hda9 / ext3 defaults 0 1
I also want to ask -how to mount my hda7 under arch without any problems?

Answer 1

You should have something like this:
title Arch Linux
root (hd0,8)
kernel /boot/vmlinuz26 root=/dev/hda9 ro
initrd /boot/kernel26.img
that's wright I have it just that way:
# Config file for GRUB - The GNU GRand Unified Bootloader
# /boot/grub/menu.lst
# DEVICE NAME CONVERSIONS
# Linux Grub
# /dev/fd0 (fd0)
# /dev/hda (hd0)
# /dev/hdb2 (hd1,1)
# /dev/hda3 (hd0,2)
# FRAMEBUFFER RESOLUTION SETTINGS
# +-------------------------------------------------+
# | 640x480 800x600 1024x768 1280x1024
# ----+--------------------------------------------
# 256 | 0x301=769 0x303=771 0x305=773 0x307=775
# 32K | 0x310=784 0x313=787 0x316=790 0x319=793
# 64K | 0x311=785 0x314=788 0x317=791 0x31A=794
# 16M | 0x312=786 0x315=789 0x318=792 0x31B=795
# +-------------------------------------------------+
# general configuration:
timeout 5
default 0
color light-blue/black light-cyan/blue
# boot sections follow
# each is implicitly numbered from 0 in the order of appearance below
# TIP: If you want a 1024x768 framebuffer, add "vga=773" to your kernel line.
# (0) Arch Linux
title Arch Linux
root (hd0,8)
kernel /boot/vmlinuz26 root=/dev/hda9 ro
initrd /boot/initrd26.img