If you have the disc's to re-install these partitions i don't see why not. I have a Dell and removed mediaDirect, since i never used it, still got the disc, did read a forum post at the time saying there was no problem re-installing it. As for recovery partition i never had that on my Dell, just regular OS disc, so can't really help with that one.
Maybe you'd find an answer on the dell community forum?
cheers Oz
Maybe you'd find an answer on the dell community forum?
cheers Oz