I own 2 server with Windows 2008 R2, both DC. The first one is of course the Primary DC (with all FSMO). What I would like to do is ro dcdemote the 2nd DC, remove it from domain and replace the Windows 2008 r2 with 2012. I will then rejoin this 2nd DC (with the new 2012 server) to domain and dcpromo it (Server Management). After this is a new DC I would like to temporary transfer all the FSMO to this server, while I'm doing the same operation on what is actually the Primary DC.
Is this a stupid solution? What I would like to do is a clean installation, I don't want to upgrade directly those systems.
Suggestions? Ideas? Thanks, Mauro