I have done this on my Masterlink, just to increase the storage space
from stock. It is really pretty easy if you can use a screwdriver.
(Well...some people can't, so you never know.) Just make sure that you
have the Masterlink OS on a ISO9660 CD. If you have a Mac, then I
think you need to have Toast in order to do this (an not just the free
version). It is annoying, but I don't think MacOS will write a 9660
disk. Or at least I couldn't figure out how to do it. If you have the
OS disk (and the screwdriver) you are all set. Good luck.

Paul