Re: grubby: unable to open /boot/boot.b: No such file or directory

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On Fri, 2008-06-27 at 01:51 +0200, Thomas Rabaix wrote:
> first, Graig, thanks for your help !
> 
> On Fri, Jun 27, 2008 at 1:40 AM, Craig White <craigwhite@xxxxxxxxxxx> wrote:
> > On Fri, 2008-06-27 at 01:23 +0200, Thomas Rabaix wrote:
> >> ok, this is my partition table : sda1 and sda2 are ext3
> >> /dev/sda1             9,9G  3,3G  6,1G  36% /
> >> /dev/sda2             449G  709M  425G   1% /var
> > ----
> > wow - all that space in /var - this a db server? You're barely using any
> > of the disk space allocated to /var
> > ----
> Well I know ... the service I use preformat the server, so I don't
> have any control on it. /var contains all files : www, mail and
> database.
> ---
> >>
> >> # e2label /dev/sda1
> >> /
> >> # e2label /dev/sda2
> >> /var
> >>
> >> Yes the file is located into /boot/grub/grub.conf. but there is not
> >> specific partition for grub, can it be an issue, does grub know how to
> >> read a etx3 partition ?.
> >>
> >> # cat /boot/grub/grub.conf
> >> default=0
> >> timeout=50
> >> title 2.6.25.6-27.fc8
> >>        root (hd0,0)
> >>        kernel (hd0,0)/boot/vmlinuz-2.6.25.6-27.fc8 ro root=/dev/sda1
> >>        initrd (hd0,0)/boot/initrd-2.6.25.6-27.fc8.img
> >>
> >> let's try to understand the last 3 lines
> >>   - root : " Set the current root device to the device device", so the
> >> root here is sda1 so h0,0 in grub syntax
> >>   - kernel : "define the kernel to load", so we load the kernel from
> >> disk h0,0 with read only attribute (not sure about the need of this,
> >> does the system switch to rw after loading?) and we define the root to
> >> the kernel as /dev/sda1 (look redundant as it is the same as the grub
> >> one)
> >>  - initrd : "Load an initial ramdisk for a Linux format boot image and
> >> set the appropriate parameters in the Linux setup area in memory." not
> >> sure to get all the bytes, but I get that this file is use to load
> >> specific module from the distribution
> >>
> >> my only current doubt, is that the / and /boot are on the same
> >> partition. So grub cannot access to /vmlinuz.... that's it why I add
> >> (hd0,0)/boot/ to make sure grub can find the kernel. Am I wrong ?
> >>
> >> So in your opinion does the grub configuration look fine ?
> > ----
> > Probably going to need someone else to verify because I am uncertain.
> >
> > Following this information
> > http://docs.fedoraproject.org/release-notes/f8/en_US/sn-Installer.html#sn-label-disk-partitions
> >
> > read through this page...it's part of the installation notes for F8
> >
> > you need to use labels in grub.conf - which is what I have been trying
> > to tell you.
> >
> > thus I would think that this...
> > 
> > title 2.6.25.6-27.fc8
> >       root (hd0,0)
> >       kernel (hd0,0)/boot/vmlinuz-2.6.25.6-27.fc8 ro root=/dev/sda1
> >       initrd (hd0,0)/boot/initrd-2.6.25.6-27.fc8.img
> >
> > should look like this...
> > 
> > title 2.6.25.6-27.fc8
> >       root (hd0,0)
> >       kernel /boot/vmlinuz-2.6.25.6-27.fc8 ro root=LABEL=/
> >       initrd /boot/initrd-2.6.25.6-27.fc8.img
> >
> > that's what I was trying to tell you.
> >
> > What I can't tell you for certain if it will work without labels as you have it presently configured...I simply don't know.
> Ok, I didn't know about all the label options. I will have a look
> tomorrow (French fedora user ...) with your indication and
> mschwendt@xxxxxxxxx's one.
----
pay attention to Michael Schwendt - he's more knowledgeable than I am.

He definitely suggested that you also change /etc/fstab to reflect the
label mount instead of the device which was also suggested in the F8
Installation notes that I linked.

Good luck

Craig

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