Moving / mountpoint

[Garry Harthill]

On 17/08/05, Paul Howarth <paul at city-fan.org> wrote:
> Garry Harthill wrote:
> > I want to move all data currently on the / mountpoint to another disk
> > and then remove the old data. (i just bought a faster disk)
> > Is this a simple matter of putting the new disk in. Mounting it
> > somewhere. Copying data to the new drive. Altering fstab to point / to
> > /dev/hdc2 (for example) then rebooting? Is there anything else i need
> > to consider?
> 
> This should work, but if you're using LVM there may be an easier way.
> Are you using LVM?

I'm not using LVM

> > /boot is mounted on another partition on the slow first disk and will
> > be staying. What changes will be needed to grub.conf. At the moment i
> > have "root=LABEL=/". What does this need to be changed to?
> > "root=/dev/hdc2=/"?
> 
> If /dev/hdc2 is the new root, you'd want "root=/dev/hdc2"; the "LABEL="
> syntax instructs the kernel to read the filesystem labels to find the
> root partition. Alternatively you could create the new root filesystem
> with a different label (e.g. "newroot") and then change the grub.conf
> entry to have "root-LABEL=newroot".

Will i need to copy the present root to the new partition from a
rescue disk because of open files, etc? Or can it be done at full
runlevel 3? I haven't used the rescue disk very much. Will it mount
everything in /etc/fstab rw or will i have to do this manual?