RE: [Xen-users] VFS: cannot open root device

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Ko0nz
> Sent: 05 June 2007 17:22
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] VFS: cannot open root device
> 
> nobody have ever the same problem?

Yes, quite frequently - and it's always the same answer: 

You need a CORRECTLY WORKING initrd (or a kernel that is built with the
relevant functionality built in). However, figuring out how to make the
initrd work can be tricky (there's really no good tools for this other
than logging the output from the console [e.g to a serial port] and
trying to figure out what part of the boot process fails and what the
reason is). 

--
Mats
> 
> On 6/3/07, ko0nz <yesiko0nz@xxxxxxxxx> wrote:
> > hi,
> >
> > i've tried xen 3.1 on my gentoo lastly but i can't boot xen 
> because of
> > the message:
> >
> > VFS: cannot open root device "/dev/hda3" or unknown-block(0,0)
> > Please append a correct "root=" boot option
> > Kernel panic - not syncing: VFS: unable to mount root fs on 
> unknown-block(0,0)
> >
> > i've used the tar source from xensource.
> > so the kernel is 2.6.18-xen
> >
> > here's my config:
> > /etc/fstab
> > /dev/hda3               /               reiserfs        noatime
> >                  0 0
> >
> > grub.cong
> > title Gentoo avec Xen 3.1 / Linux 2.6.18-xen
> > root (hd0,0)
> > kernel (hd0,0)/xen-3.1.0.gz
> > module (hd0,0)/vmlinuz-2.6.18-xen ro root=/dev/hda3
> > module (hd0,0)/initrd.img-2.6.18-xen --> i've tried with and without
> >
> > any help would be appreciated.
> >
> > thank in advance.
> >
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> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
> >
> 
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> 



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