Arch Linux

spigy11

Member

Registered: 2009-03-13

Posts: 5

Kernel panic - not synching:VFS:Unable to mount root fs on unknown

Hi guys

I skipped from ubuntu to arch to better understand the way how linux works

I made yesterday an upgrade of pacman repos and afterward and upgrade all Archlinux installation, also i think the kernel was included.

After that Im getting an error message

Kernel panic - not synching:VFS:Unable to mount root fs on unknown-block(0,0)

Im using Grub 0.97

I assume I have some bad option in grub loader, because Im able to start without problems with Archlinux-fallback

[root@archlinux ~]# view /boot/grub/menu.lst

# Config file for GRUB - The GNU GRand Unified Bootloader
# /boot/grub/menu.lst

# DEVICE NAME CONVERSIONS 
#
#  Linux           Grub
# -------------------------
#  /dev/fd0        (fd0)
#  /dev/sda        (hd0)
#  /dev/sdb2       (hd1,1)
#  /dev/sda3       (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
#     +-------------------------------------------------+
#  for more details and different resolutions see
#  http://wiki.archlinux.org/index.php/GRU … Resolution 

# 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   (hd0,0)
kernel /vmlinuz26 root=/dev/disk/by-uuid/9582c987-8790-462b-b421-b30dea9f03d6 ro
initrd /kernel26.img

# (1) Arch Linux
title  Arch Linux Fallback
root   (hd0,0)
kernel /vmlinuz26 root=/dev/disk/by-uuid/9582c987-8790-462b-b421-b30dea9f03d6 ro
initrd /kernel26-fallback.img

# (2) Windows
#title Windows
#rootnoverify (hd0,0)
#makeactive
#chainloader +1
~                                                                                             

I would really appreciate any kind of help or some links in this forum which could direct my to solve my problem

Thank you in advance

Aprz

Member

From: Newark

Registered: 2008-05-28

Posts: 277

Re: Kernel panic - not synching:VFS:Unable to mount root fs on unknown

It's your kernel. Try downloading a different copy of Arch. Apparently, it doesn't have support for your block device.

Odysseus

Member

Registered: 2009-02-15

Posts: 141

Re: Kernel panic - not synching:VFS:Unable to mount root fs on unknown

Well, the fallback image does work, so you just need to make sure you have the right hooks specified on your mkinitcpio.conf, and then rebuild it:

http://wiki.archlinux.org/index.php/Con … mkinitcpio

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I'm the type to fling myself headlong through the magical wardrobe, and then incinerate the ornate mahogany portal behind me with a Molotov cocktail.

spigy11

Member

Registered: 2009-03-13

Posts: 5

Re: Kernel panic - not synching:VFS:Unable to mount root fs on unknown

@aprz

Well didnt change any hardware so I dont see why the kernel shouldn't support my block device

BTW Im running Archlinux in VMware Workstation 6.5 to test Arch before I put it sharp on my pc

@Odysseus

Wow I just love that awesome arch linux wiki, Respect

Gonna tryout

Thank you both for support

spigy11

Member

Registered: 2009-03-13

Posts: 5

Re: Kernel panic - not synching:VFS:Unable to mount root fs on unknown

Hi

@to all In case of the problem Kernel Panic.......

Start Archlinux from fallback in GRUB

as root execute

mkinitcpio -g /boot/kernel26.img

Worked for me just fine

explanation

http://wiki.archlinux.org/index.php/Mkinitcpio