We have a domain with 3 WIN2K DCs. One DC was hosting all the Master roles and DNS. The others were backup DCs The HDD on the main one failed, so I binned it and seized the Master roles to one of the others (which also had DNS on it) The roles all transferred correctly (seemingly) but DNS is not working correctly. When I tried to DCPROMO a clean install of WIN2K server, it told me the Wizard could not access the list of domains in the forest and refused to continue. However, I can PING and NSLOOKUP from machines already on the domain, and all reports correctly. Please can someone shed any light on this?