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List:       grub-help
Subject:    Re: grub-probe: error: cannot stat `/dev/root'
From:       CACook () quantum-sci ! com
Date:       2011-05-21 14:46:17
Message-ID: 201105210746.17823.CACook () quantum-sci ! com
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On Thursday 19 May, 2011 08:40:40 CACook@quantum-sci.com wrote:
> On Wednesday 18 May, 2011 07:43:42 CACook@quantum-sci.com wrote:
> > On Wednesday 18 May, 2011 00:50:37 Jordan Uggla wrote:
> > > On Tue, May 17, 2011 at 1:03 PM,  <CACook@quantum-sci.com> wrote:
> > > > 
> > > > Nobody knows why:
> > > > grub-probe: error: cannot stat `/dev/root'
> > > 
> > > Can you post the contents of /proc/mounts and try to reproduce the
> > > problem with grub 1.99 final?
> > 
> > # cat /proc/mounts
> > rootfs / rootfs rw 0 0
> > /dev/root / btrfs rw,relatime,noacl 0 0
> > tmpfs /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0
> > proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
> > sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
> > tmpfs /dev tmpfs rw,relatime,size=10240k,mode=755 0 0
> > tmpfs /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0
> > devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0
> > /dev/sda1 /boot ext3 \
> > rw,relatime,errors=continue,commit=5,barrier=0,data=writeback 0 0 none \
> >                 /proc/bus/usb usbfs rw,relatime,devgid=46,devmode=664 0 0
> > /dev/sda4 /media/winxp fuseblk \
> > rw,nosuid,nodev,noexec,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 \
> > 0 0 fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
> > binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime \
> > 0 0 bill@droog:/ /media/droog fuse.sshfs \
> > rw,nosuid,nodev,noexec,relatime,user_id=0,group_id=0,allow_other,max_read=65536 0 \
> > 0 carl@hex:/ /media/hex fuse.sshfs \
> > rw,nosuid,nodev,noexec,relatime,user_id=0,group_id=0,allow_other,max_read=65536 0 \
> > 0 
> > In the current Debian Testing I do not have grub1.99 final available, only \
> > 1.99~rc1-13. # update-grub2
> > /usr/sbin/grub-probe: error: cannot stat `/dev/root'.
> > #
> 
> Any thoughts?

It appears that no one knows why I'm unable to boot.  Grub is broken with BTRFS, and \
there doesn't seem to be any impetus to fix it.

I'd better warn others in the forums.


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