Mohaned Wageeh : How To Upgrade Domain Windows 2003 To 2008

To Upgrade To Windows 2008 ( In-Place )

On Windows Server 2003 DC
do The below Steps

1- Raise domain functional level
Go to " Active Directory Users and computers "
And Right Click on You Domain name
Then Click on " Raise Domain Functional Level "

Then from the Drop-Down Menu select " Windows Server 2003 " and Click " Raise "

2- Raise Forest functional level
Go to " Active Directory Domains and Trusts "
And Right Click Active Directory Domains and Trusts
Then Click on " Raise Forest Functional Level "

Then from the Drop-Down Menu select " Windows Server 2003 " and Click " Raise "

3-On Windows Server 2003 DC, insert the Windows Server 2008 DVD, then open command prompt and change directory to d:\sources\adprerp directory. Here D:\ is my dvd rom drive. In your case do as appropriate.

note: you need to log on to windows 2003 domain controller as enterprise admin to run these command open CMD
Open CMD
Now run following command adprep/ forestprep