Red Hat Bugzilla – Bug 51219
vfs: cannot open root device "" or 08:41
Last modified: 2007-03-26 23:47:47 EDT
Description of Problem:
i try to install redhat 7.1 on a compaq proliant 2500 server
when i boot the install cd the kernel stops with:
NET4: Unix Domain sockets 1.0/SMP for Linux NET4.0
VFS: Cannot open root device "" or 08:41
Please append a correct "root=" boot option
Kernel panic: VFS: Unable to mount root fs on 08:41
Steps to Reproduce:
1. insert RH 7.1 CD in Proliant 2500 Server and turn power on
2. enter the boot option linux mem=1024M (your ram size)
(normaly Linux only find 16MB RAM in the Proliant if you dont specify
the correct size)
3. watch the kernel booting and you will get this error.
i installed RH7.0 and Mandrake 8.0 on this Server,
all works fine.. only get this error with RH7.1
Proliant 2500 Config:
2 Pentium Pro 200Mhz CPU4S
1024 MB RAM = 4 256MB RAM Compaq Modules
5 Compaq HD 4,3GB on a Compaq Smart Array Controller
also the system was running since 4 years with NT4.0 Server
all day and night.. hmm... :)))) *no lie*
but now it needs RH7.1 .. not WIN2K
Can you try booting with 'linux ide=nodma' at the boot screen? Does that help?
the same problem with "ide=nodma"
the harddisks are on a compaq smart 2DH controller - in a RAID5
i installed suse 7.2 today.. works fine on this system
This looks like a kernel problem. Changing component.
Can you please try the following options?
"mem=exactmap mem=640k@0 mem=255@1M"
I'm having the same problem when I try to install Red Hat Linux 7.1 into Toshiba Portege 7000CT.
I used DOS to run the installer (from CD ROM) and got the same error msg: VFS: cannot open root device "" or 08:41
How do try the suggestion above by arjanv:
Can you please try the following options? "mem=exactmap mem=640k@0 mem=255@1M"
Does this relate to me.
I'm having the same problem with installing RH7.1 on my P-120 64MB Midwest Micro
PC. Tried the above solutions to no avail. JJOLEARY@OPTONLINE.NET
VFS: cannot open root device "" or 8:41
I have the exact same problem here as well. Installing 7.2
I tried the mem options listed previously but my system starts to load and then
goes to blank screen and nothing. I am a Linux newbe ( sorry)... I didn't open
a web support ticket, do I need to since this is already being worked on?
My system is asus p2bs with aic7876 onboard. IBM 9Gig HDD ( 1111 sectors if it
matters, I get warning messages) 254meg ram. What other information would you like?
I know windows OS well, but I am sucking my thumb here guys...
I don't know if this matters but
I noticed the error indicated here is happening when the install cd is booted.
I make it all the way through the install and get the error "vfs: cannot open
root device "sda2" or 08:02 "when Linux tries to load from my scsi drive.
"mem=exactmap mem=640k@0 mem=255@1M"
works for me.. sorry for the late answer ;)
here is my working grub.conf, rh7.3 runs good on this old compaq proliant 2500
# grub.conf generated by anaconda
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/ida/c0d0p3
# initrd /initrd-version.img
title Red Hat Linux (2.4.18-17.7.xsmp)
kernel /vmlinuz-2.4.18-17.7.xsmp ro root=/dev/ida/c0d0p3 mem=exactmap
title Red Hat Linux (2.4.18-17.7.x)
kernel /vmlinuz-2.4.18-17.7.x ro root=/dev/ida/c0d0p3 mem=exactmap mem=640K@0
title Red Hat Linux (2.4.18-10smp)
kernel /vmlinuz-2.4.18-10smp ro root=/dev/ida/c0d0p3 mem=exactmap mem=640K@0
title Red Hat Linux (2.4.18-10)
kernel /vmlinuz-2.4.18-10 ro root=/dev/ida/c0d0p3 mem=exactmap mem=640K@0
title Red Hat Linux (2.4.18-5smp)
kernel /vmlinuz-2.4.18-5smp ro root=/dev/ida/c0d0p3 mem=exactmap mem=640K@0
title Red Hat Linux (2.4.18-5)
kernel /vmlinuz-2.4.18-5 ro root=/dev/ida/c0d0p3 mem=exactmap mem=640K@0