Upgrade 9.10 to 10.04 with cd

[nine tails]

Hi,
I want to upgrade my 9.10 to 10.04

https://help.ubuntu.com/community/LucidUpgrades#Upgrading%20Using%20the%20Alternate% 20CD/DVD
I tried to mount cd, but something goes wrong, I think

bang@bang-laptop:~$ sudo mount -o loop ~/Desktop/Ubuntu 10.04 LTS i386 /media/cdrom0
Usage: mount -V : print version
mount -h : print this help
mount : list mounted filesystems
mount -l : idem, including volume labels
So far the informational part. Next the mounting.
The command is `mount [-t fstype] something somewhere'.
Details found in /etc/fstab may be omitted.
mount -a [-t|-O] ... : mount all stuff from /etc/fstab
mount device : mount device at the known place
mount directory : mount known device here
mount -t type dev dir : ordinary mount command
Note that one does not really mount a device, one mounts
a filesystem (of the given type) found on the device.
One can also mount an already visible directory tree elsewhere:
mount --bind olddir newdir
or move a subtree:
mount --move olddir newdir
One can change the type of mount containing the directory dir:
mount --make-shared dir
mount --make-slave dir
mount --make-private dir
mount --make-unbindable dir
One can change the type of all the mounts in a mount subtree
containing the directory dir:
mount --make-rshared dir
mount --make-rslave dir
mount --make-rprivate dir
mount --make-runbindable dir
A device can be given by name, say /dev/hda1 or /dev/cdrom,
or by label, using -L label or by uuid, using -U uuid .
Other options: [-nfFrsvw] [-o options] [-p passwdfd].
For many more details, say man 8 mount .

It didn't pop up the upgrade dialog, so I tried Alt+F2

gksu "sh /cdrom/cdromupgrade"
But nothing happend
Anyone help me
Thanks in advance!