Finally,
go to the package manager in the Mandrake Control Center, section
rpm-sources and tick the "updates" box for the update_source.
Now
every time you do the updates in the MCC it will look in
/mnt/hdaX/MyUpdates if there are new updates available and install them
if needed. ( sure, you have to rsync the /mnt/hdaX/MyUpdates first with
the command printed above. )
Have fun ! ( and make sure that during all this time the /mnt/hdaX is
mounted !! )

Bruno
PS: You can also burn the updates to CD: "mkisofs -R -o Update.iso
/mnt/hdaX/MyUpdates" will make an ISO file which you can use to make
the UpdateCD. ( See also the second part
Here
on how to use the UpdateCD )
-- Mar 06 2006 --