To revive an old thread. I had 3 dc's and 2 of them have died when the storage holding their virtual hdds died (long story)!! The one remaining DC has all 5 roles and is working ok. Can i just follow the Petri link above to the letter and remove them without problems then just create 2 new ones and dcpromo them up.
Never had to play with multiple DC's before and want to make sure im not going to kill AD!!
Yep - follow the link above, then create new ones and dcpromo them - you should be fine :-)