how to Synchronize updated ubuntu partition to the fresh one?

[Freakonomist]

hi there, i'm comer here, and new to ubuntu either. actually i have successfully installed ubuntu netbook remix to a usb external harddrive, then used it with my eee pc 1000h, boot from usb ext HD. and i also have updated the system and installed softwares from the repositories. it works well and up-to-date.
now i want to install the same system into my main HD in my netbook, to make it dual boot with XP. and i already installed the fresh partition in my main HD, and the dual booting works just fine. but i have question about the updating,

can i just synchronize the updated packages from my updated USB harddrive to the fresh partition??...so i don't have to download the samething all over again.

if it is possible, how can i do it, and what tools should i use?

regars
Freakonomist

[hogu]

all the files you just installed should be on your usb drive, at this location

var/cache/apt/archives

you can copy those to your machine, and then, according to this thread;

http://ubuntuforums.org/showthread.php?t=299447

sudo dpkg -i * should install everything

(I've never actually done it this way fyi)

but it should work.