Arch Linux

cyrus

Member

From: Auckland

Registered: 2011-02-14

Posts: 26

Website

(SOLVED) Unable to boot after kernel image update

My  fault entirely, I rebooted after tbe linux kernel update showed some errors. Now I can't boot into my system.

I  am dropped to a recovery shell - [ramfs/]#

Any help to boot back into my system appreciated.

ERROR: Unable to determine major/minor number of root device.

Last edited by cyrus (2012-01-20 07:35:30)

gregor

Member

From: /planet/tmpfs

Registered: 2011-06-20

Posts: 175

Re: (SOLVED) Unable to boot after kernel image update

output from /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)                          <====================== READ THIS !!!

output from command #cfdisk

cfdisk (util-linux 2.20.1)
                                                               Disk Drive: /dev/sda
                                                        Size: 320072933376 bytes, 320.0 GB
                                              Heads: 255   Sectors per Track: 63   Cylinders: 38913

       Name                  Flags                Part Type          FS Type                       [Label]                    Size (MB)
------------------------------------------------------------------------------------------------------------------------------------------------
       sda2                                        Primary           ntfs                          [Packard Bell]             217945.25           
       sda1                  Boot               Primary           ntfs                          [SYSTEM RESERVED]             115.16
       sda3                               Primary       ext2                      [linuxboot]                    98.71                                        <=========== READ THIS !!!
       sda5                                        Logical           crypto_LUKS                                               24996.63
       sda6                  NC                 Logical           reiserfs                                                  76916.86          *
                                                      Logical           Free Space                                                    0.36          *

output from /boot/grub/menu.lst   "the boot /dir pointer"

# (1) Arch Linux
title  Arch Linux
root   (hd0,2)                           <============= READ THIS !!!!
kernel /vmlinuz-linux cryptdevice=/dev/sda5:root root=/dev/mapper/root ro vga=0x034b
initrd /initramfs-linux.img

you are stating "ERROR: Unable to determine major/minor number of root device"

your boot can't find you're root (=boot) partition

Last edited by gregor (2012-01-19 20:13:07)

---

Archlinux (less = more)    + wmfs2-git

https://github.com/xorg62/wmfs/wiki

cyrus

Member

From: Auckland

Registered: 2011-02-14

Posts: 26

Website

Re: (SOLVED) Unable to boot after kernel image update

I only have Arch on my drive that has always booted from (hda0,0)

What do I type from the recovery shell [ramfs/]# to boot into my system and rectify the update error?

cyrus

Member

From: Auckland

Registered: 2011-02-14

Posts: 26

Website

Re: (SOLVED) Unable to boot after kernel image update

I booted into my system with SystemRescueCd and used the boot option to boot into an existing Linux OS.

After that I reinstalled linux that generated a success this time. Subsequently I was able to boot correctly.