unable to access sda2 on boot

Sat Apr 7 17:22:20 UTC 2007

Thanks Tim, heres some more information, fdisk -l returns:

Disk /dev/sda: 200.0 GB
device     Boot  Start    End      Blocks        ID   System
/dev/sda1   *     1         13        104391       83  Linux
/dev/sda2         14        268      2048287+   82  Linux Swap / Solaris
/dev/sda3         269      24321  193205722+ 8e linux LVM

Disk /dev/sdb: 200.0 GB
device     Boot  Start    End      Blocks        ID   System
/dev/sdb1  *       1        1530     12289693+  83  Linux
/dev/sdb2          1531   24321   183068707+ 8e Linux LVM

I think what I did was put /boot and swap on the first drive, then / on the
other, probably thinking that it might help performance, the rest was LVM
so I could change things around.

I'm new to this, not sure where grub ends, so i'll describe again.  When I
power on it brings up the GNU Grub version 0.97 and allows me to select
which FC I want to boot 2.6.20 or 2.6.19.  I let it load .20, then:
Booting 'Fedora Core (2.6.20......)'
root (hd0,0).... some more things that seem to go ok...

Then it says "Uncompressing Linux.... Ok, booting the kernel."

I'm assuming that means its fstab i'll have to mess with?  I didnt mention
it, but those several errors that I get after the first two lines are 'No
such file or directory' errors.

Just want to be more specific since I'll be messing with files i don't know
anything about (yet).  Is there anything else I could let you know?  Should
I start with the fstab changes you suggested?

Thanks for your time man, really appreciate it.

Peter

On 4/6/07, Tim <ignored_mailbox at yahoo.com.au> wrote:
>
> On Thu, 2007-04-05 at 19:05 -0400, Peter Ebert wrote:
> > First off, I'm running Fedora Core 2.6.20-1.2925.fc6
> >
> > I had everything running semi smothly on a new intel board, found out
> > that my cd problems were caused by the board, so I swapped for an old
> > abit aw8-max, everything else remaining the same.
> >
> > When I tried to boot, after "Red Hat Nash version 5.1.19.0.3 starting"
> > I get the error:
> > "Unable to access resume device (LABEL=SWAP-sda2)"
> > "mount: could not find filesystem '/dev/root'"
> > Then a series of errors that I assume are a result of not being able
> > to mount these partitions?
>
> Depending on how things were previously connected, taking all drives
> into consideration, you might need to fiddle with the device names in
> the grub.conf and/or fstab files.
>
> GRUB's root(hd0,0) starts counting from zero from the first hard drive
> it finds.  That's drives, not ports, it doesn't count unused ports.  If
> you've got past the point of the GRUB menu, and Linux is starting to
> boot, with *all* the starting .... messages, not just an attempting to
> start sort of message, that part of things is set right.  So it's not
> grub.conf that you need to play with, probably the fstab file.
>
> Linux is different from GRUB, it counts devices from the ports, whether
> or not a drive is plugged into them (/dev/hda, /dev/hdb, /dev/sda, etc.,
> being predictable port locations, they don't change).  You could *try*
> changing any fstab swap lines from using a label to a device name.
>
> e.g. from LABEL=SWAP-sda2    swap     swap    defaults        0 0
>     to   /dev/sda2          swap     swap    defaults        0 0
>
> Having a BIOS that lets you swap boot drive order can muddy the waters,
> as some things may seem to be different devices pre-boot than post-boot.
>
> The resume message means the system couldn't find the drive partition to
> resume from, or didn't find anything on that partition to resume from
> (it's not waking up from a hibernation).  The first part may be due to
> your labelling not being readable, or the partition device may need
> redoing in fstab (sda becoming sdb, or something like that).
>
> I seem to recall the unable to find /dev/root being related to the root=
> part of the kernel line in the grub.conf file.
>
> title Fedora Core (2.6.20-1.2925.fc6)
>        root (hd0,0)
>        kernel /vmlinuz-2.6.20-1.2925.fc6 ro root=LABEL=/
>        initrd /initrd-2.6.20-1.2925.fc6.img
>
> You might want to try the same trick and use root=/dev/sda(whatever)
> instead of root=LABEL=/.
>
> All in all, this sounds a little like you've got GRUB installed on
> drive, but the OS on the other.
>
> > I put in the install disk I used, and run "linux rescue" it
> > succesfully detects the install, and i think it mounts ok (little
> > fuzzy on what that means exactly but I didnt get any errors geting to
> > the rescue shell)  When I get to a command line i type the only
> > command i can think of "fdisk -l" and see the drives detected
> > correctly and the partitions on them listed correctly as well.
>
> You probably should have posted that information, here.
>
>
> --
> (This box runs FC6, my others run FC4 & FC5, in case that's
> important to the thread.)
>
> Don't send private replies to my address, the mailbox is ignored.
> I read messages from the public lists.
>
>
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