Disk problems - continuing saga

[Gordon Low]

Thanks for reply.


As you say I am in unfamiliar territory and am using the "Hard Disk
Upgrade Mini How-To" from the Linux Documentation Project at
www.tldp.org/docs.html#howto (direct link to the page is
www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Hard-Disk-Upgrade.htmlCopy) command is in section 7 and I am using the safe option of..
"cp -a /bin /boot ......... /tmp /usr /var /new-disk".
Before going to this I am preparing the partitions completely and I go
into single user mode. 
Have run the command "find / -path /pro........-disk{} \; a couple of
times to compare disks and see some differences but these have been in
the /home or /export directory where the original file is corrupt and
cannot be read Have never seen a file which I would consider critical
although have not sat and watched all the way through. Tried to do a  
"| tee file" so that I could see the differences but could not get it to
work, my experience with Linux commands isn't as good as it should be!


Thanks

Gordon Low


On Mon, 2004-11-01 at 13:23, Bob McClure Jr wrote:
> On Sun, Oct 31, 2004 at 11:35:57AM +1100, Gordon Low wrote:
> > 
> > Sorry about line wrap on previous post, was done via web am using
> > Evolution this time.
> > 
> > Still having problems. 
> > I managed to get old disk back on and changed settings in /etc/fstab
> > from LABEL to /dev/hda. Copied files to new disk using cp and looked ok.
> 
> I'm curious what cp command line you used.  I prefer using find and
> cpio, but cp may work depending on what options you use.
> 
> My method requires you to create a directory called, say, /newpart,
> and then to copy a partition, you (say, for /home)
> 
>   mount /dev/hdbx /newpart # where hdbx is the partition for /home
>   cd /home
>   find . -mount -depth | cpio -pdm /newpart
>   umount /dev/hdbx
> 
> and repeat for each partition.  That preserves timestamps and
> ownership, and copies everything including symlinks and devices.
> 
> > Created new proc directory and next step was to put disk in final
> > position and boot to cd and try installing Grub via "linux rescue".
> > 
> > Problems started here... 
> > First configuration was new disk only and the "linux rescue"could not
> > find an image on the new disk. Couldn't find Grub to install on the
> > disk. Tried just booting but prints  "Verifying DMI..." then "GRUB " and
> > halts there.
> > 
> > Put the new disk in as master and the old disk in as slave and tried
> > again. This time with "linux rescue" it reports that both images were
> > available but when I try to mount either of them I get an error saying
> > they may be only partially mounted. Can't chroot into them and can't use
> > Grub.
> 
> Because one is a copy of the other, the /etc/fstab on the slave
> (/dev/hdb) has references to /dev/hda, so it won't compute.
> 
> > When I put the old disk in as master and the new as the slave I can find
> > images on both disks using the rescue disk and can mount either of them.
> > Did not want to use Grub here as I think I have already tried this, new
> > disk is /dev/hdb. Think I have already had problems with this but cannot
> > remember so would be grateful for any help.
> > 
> > Thought about trying couple of things.
> > 1. Use rescue with old=master and new=slave and install with grub. Is it
> > best to chroot to the old or new disk?
> 
> Has to be the new disk, but I don't think that will work because the
> drive is in the wrong place to make sense.
> 
> > 2. Did not use fsck on new disk will check now.
> 
> After any debacles, that's a good idea.
> 
> > 3. Any difference if I use a boot disk?
> 
> I don't know.  I doubt it.
> 
> > Thanks for any help, I dream one day of having this installed.
> > 
> > 
> > Gordon Low
> 
> I know you're in unfamiliar territory, and I've done it many a time,
> so it's easy for me to say it's easy.  I'm suspicious of your cp operation.
> 
> Cheers,
> -- 
> Bob McClure, Jr.             Bobcat Open Systems, Inc.
> robertmcclure at earthlink.net  http://www.bobcatos.com
> Grace happens.
> 
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