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On my forest root, is there a certain amount of space I need to upgrade to 2003 Active Directory? I know I need to put in the cd/dvd for 2003 and do adprep, so I'm guess lots of space is used. The disk is almost full now so if it is too much, I don't know how I can ever upgrade.

This is not an upgrade of the Windows 2000 OS, just an upgrade to Windows 2003 AD. Another machine will eventually take the place of the forest root, but I have to prep things, as I understand it, before I can pass the FSMO roles to the new machine and remove the old machine.

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This doesn't make sense. Are you talking about raising the Forest Functional Level? If so, that doesn't require running adprep –  MDMarra Jan 3 '13 at 22:00
    
@MDMarra I thought you had to prep the AD before you can raise it to 2003 functionality? Maybe it is forest prep? –  johnny Jan 3 '13 at 22:01
    
@MDMarra, I think he is just talking about updating the schema, so he can add a newer DC. –  Zoredache Jan 3 '13 at 22:02
    
johnny, do you want to install a 2003 DC along side your 2000 DC, or do you already have an existing 2003 DC and want to raise the functional level from 2000 to 2003? –  MDMarra Jan 3 '13 at 22:04
    
I don't have exact numbers, but I would to take a look at the size of your C:\Winnt\NTDS, and see how big that is. If you have enough free space, for ~2 * ( the current size of C:\Winnt\NTDS) I bet you will probably be ok. –  Zoredache Jan 3 '13 at 22:04

1 Answer 1

300MB is plenty of space for the required Schema updates needed to introduce a later domain controller into the forest.

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