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[emailed as well]

In article <DM3Fy6.JsM@hkuxb.hku.hk>,
	lpwong@dragon.cs.hku.hk (Wooh! U're..Helium!!) writes:
>I want to move the /usr to another partition, how can I do it?
>I've already prepare the partition for /usr but I don't know
>how to do then.

You need to duplicate your entire /usr tree onto the new drive.

First, amount the new drive into some convenient location, such as
/mnt:

  mount -t <type> /dev/?d?? /mnt

Then do the following to completely duplicate the directory tree:

(cd /usr; tar cf - . ) | (cd /mnt; tar xvf -)

The effect is to run tar twice in a pipe, the sending end creating
an archive into the pipe starting at /usr, and the receiver grabbing
data from the pipe and unpacking it into /mnt.

Do this when logged in as root (or su'd), of course.

Add mounting of /usr to /etc/fstab.

init S

to enter single user mode. Unmount the partition from /mnt.

cd / ; mv usr usr.old ; mkdir usr ; sync; sync

Reboot the system.

You should now have that partition mounted on /usr, with the old
contents placed in /usr.old (which you can junk, backup, or whatever
at your convenience).

-- 
David Nugent: davidn@blaze.net.au, davidn@unique.blaze.net.au
Unix/Linux/DOS/Win/Os2 Microsystem Technical Support [FOR HIRE!]
http://www.blaze.net.au/~davidn