We tried to clone the Hardisk of the MAILER PC running Windows NT with MSExchange Server 5.5 using Norton Ghost 2003. We also used different size of hard disk than the MASTER so everytime we booted from the Clone the Directory Service couldnt run and so. We are trying to find a solution for Backin up the hardisk or even correct this problem with the service. Can we upgrade to Win2000 Server, will the problem be solved? Can anyone suggest something?