remove AD from a windows 2003 server

make sure transfer 5 FSMO roles over, and make the new DC an GC

then run dcpromo

it will ask whether it's the last dc, and local password

then it will do the last replication

in my case i got a warning about ms tapi3 app partitition not on the other server, can't be transferred.

there is an error about netlog  problem about gc. tick off this server as gc to continue

the msg is gc is autheticate logins, or dear i thought dc can do that ...?