Share your knowledge at the LQ Wiki.
Go Back > Forums > Linux Forums > Linux - General
User Name
Linux - General This Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.


  Search this Thread
Old 11-17-2005, 01:23 PM   #1
LQ Newbie
Registered: Nov 2005
Posts: 2

Rep: Reputation: 0
VFS: Cannot open root device "cobd1" or unknown-block(117,1)

Hi guys, need help i'm new to linux on awhole and i'm trying to install colinux on a windows 2003 server platform. i've followed the instructions directly went over them again and again. I dont see what i'm doing wrong. please help. Thanks

following is the command "colinux-daemon.exe -c debian3.xml" results.

Also the CoLinux is installed on C:\Program Files\coLinux>

C:\Program Files\coLinux>colinux-daemon.exe -c debian3.xml
Cooperative Linux Daemon, 0.6.2
Compiled on Sat Feb 5 10:19:28 2005

auto selecting TAP
found TAP device named "Local Area Connection"
opening TAP: "Local Area Connection"
driver version 8.1
enabling TAP...
Linux version 2.6.10-co-0.6.2 ( (gcc version 3.3.5 (Debia
n 1:3.3.5-8)) #5 Sat Feb 5 10:19:16 IST 2005
256MB LOWMEM available.
initrd enabled: start: 0xcfea2000 size: 0x0015db27)
On node 0 totalpages: 65536
DMA zone: 0 pages, LIFO batch:1
Normal zone: 65536 pages, LIFO batch:16
HighMem zone: 0 pages, LIFO batch:1
Built 1 zonelists
Kernel command line: root=/dev/cobd0
Initializing CPU#0
Setting proxy interrupt vectors
PID hash table entries: 2048 (order: 11, 32768 bytes)
Using cooperative for high-res timesource
Console: colour CoCON 80x25
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 254592k/262144k available (1502k kernel code, 0k reserved, 548k data, 10
4k init, 0k highmem)
Calibrating delay loop... 52.32 BogoMIPS (lpj=261632)
Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000
CPU: After vendor identify, caps: bfebfbff 00000000 00000000 00000000
CPU: Trace cache: 12K uops, L1 D cache: 8K
CPU: L2 cache: 512K
CPU: After all inits, caps: bfebfbff 00000000 00000000 00000080
CPU: Intel(R) Xeon(TM) CPU 2.60GHz stepping 07
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
checking if image is isn't (no cpio magic); looks like an initrd
Freeing initrd memory: 1398k freed
NET: Registered protocol family 16
devfs: 2004-01-31 Richard Gooch (
devfs: boot_options: 0x0
cofuse init 0.1 (API version 2.2)
Initializing Cryptographic API
serio: cokbd at irq 1
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
elevator: using anticipatory as default io scheduler
cobd: loaded (max 32 devices)
loop: loaded (max 8 devices)
conet: loaded (max 16 devices)
conet0: initialized
mice: PS/2 mouse device common for all mice
input: AT Translated Set 2 keyboard on cokbd
NET: Registered protocol family 2
IP: routing cache hash table of 2048 buckets, 16Kbytes
TCP: Hash tables configured (established 16384 bind 32768)
NET: Registered protocol family 1
NET: Registered protocol family 17
RAMDISK: Compressed image found at block 0
EXT2-fs warning: checktime reached, running e2fsck is recommended
VFS: Mounted root (ext2 filesystem).
VFS: Cannot open root device "cobd0" or unknown-block(117,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(117,0)
Old 11-17-2005, 06:16 PM   #2
Registered: Nov 2002
Location: Kent, England
Distribution: Debian Testing
Posts: 19,192
Blog Entries: 4

Rep: Reputation: 470Reputation: 470Reputation: 470Reputation: 470Reputation: 470
Hi and welcome to LQ I have moved your thread to Linux-General as this fits better there.
Old 11-19-2005, 07:10 PM   #3
LQ Newbie
Registered: Nov 2005
Posts: 2

Original Poster
Rep: Reputation: 0
Hi All,

Found my problem. when i edited the debian.xml file i made a mistake on my typing, all is working now and i'm connecting to the internet. Now i need a desktop does CoLinux have its own, or can anyone suggest a good one Thanks.
Old 12-12-2007, 08:38 AM   #4
LQ Newbie
Registered: Jan 2007
Posts: 1

Rep: Reputation: 0
Hi I am trying to use the defualt configuration file and got the same error.

Can you tell me what was the exact problem and how did u fix it.

My configuration file looks like as follows

# This is an example for a configuration file that can
# be passed to colinux-daemon in this manner:
# colinux-daemon @example.conf
# Note that you can still prepend or append configuration and
# boot parameters before and after '@', or you can use more
# that one '@ to load several settings one after another.
# colinux-daemon @example.conf @overrider.conf mem=32
# Full list of config params is listed in colinux-daemon.txt.

# The default kernel

# File contains the root file system.
# Download and extract preconfigured file from SF "Images for 2.6".
cobd0="c:\Program Files\coLinux\root_fs"

# Swap device, should be an empty file with 128..512MB.
#cobd1="c:\Program Files\coLinux\swap_device"

# Tell kernel the name of root device (mostly /dev/cobd0,
# /dev/cobd/0 on Gentoo)
# This parameter will be forward to Linux kernel.

# Additional kernel parameters (ro = rootfs mount read only)

# Initrd installs modules into the root file system.
# Need only on first boot.

# Maximal memory for linux guest

# Slirp for internet connection (outgoing)
# Inside running coLinux configure eth0 with this static settings:
# ipaddress broadcast netmask
# gateway nameserver

# Tuntap as private network between guest and host on second linux device

# Setup for serial device
#ttys0=COM1,"BAUD=115200 PARITY=n DATA=8 STOP=1 dtr=on rts=on"

# Run an application on colinux start (Sample Xming, a Xserver)
#exec0=C:\Programs\Xming\Xming.exe,":0 -clipboard -multiwindow -ac"

Last edited by manju_pnaik; 12-12-2007 at 08:39 AM.
Old 12-12-2007, 07:19 PM   #5
LQ 5k Club
Registered: Jan 2006
Location: Oldham, Lancs, England
Distribution: Slackware & Slackware64 14.1
Posts: 7,453
Blog Entries: 55

Rep: Reputation: Disabled
You haven't edited it to show the fs and swap files:

cobd0="c:\Program Files\coLinux\root_fs"
and the swap:

cobd1="c:\Program Files\coLinux\swap_device"
Put the filesystem and swap details in and remove the hash marks.

When I tried coLinux recently I used the Debian-4.0r0-etch.ext3.1gb, and the swap_512Mb file.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
FC2; VFS: Cannot open root device "LABEL=/" or unknown-block(0,0) Starchild Fedora 11 01-18-2006 04:39 AM
VFS: Cannot Open Root Device "Label=/" abefroman Red Hat 4 05-03-2005 10:03 AM
New kernel - VFS: Cannot open root device "301" or unknown block(3,1) j0y Debian 2 04-30-2005 10:14 PM
Kernel Panic:VFS: Cannot open root device "hda3" or 00:10 shivendnrab Linux - General 1 07-01-2004 04:08 AM
VFS: Cannot open root device "1601" or unknown-block(22,1) takehora Slackware 3 06-11-2004 09:34 PM

All times are GMT -5. The time now is 02:03 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration