ubun2

 
Fastest and easiest way to upgrade from 9.04 to 9.10 is using the ubuntu alternate install CD or image
 
Download 32 bit iso image from http://releases.ubuntu.com/karmic/ubuntu-9.10-alternate-i386.iso or 64 bit iso image from http://releases.ubuntu.com/karmic/ubuntu-9.10-alternate-amd64.iso
 
Burn it to a CD using a CD burner or mount it as a cd rom drive using the following command
 
sudo mount -o loop ~/Desktop/ubuntu-9.10-alternate-i386.iso /media/cdrom0   (for 32 bit)
or
sudo mount -o loop ~/Desktop/ubuntu-9.10-alternate-amd64.iso /media/cdrom0   (for 64 bit)
 
If you have burned to a CD, on inserting the CD will autorun and will prompt a dialog to upgrade and choose "Run Upgrade" button and everything is automatic.
 
When you mount iso, run the following command
 
gksu "sh /cdrom/cdromupgrade"
 
and it will show the dialog and start upgrading