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Windows Server 2008 R2 Thread, Win 2003 32-bit > Win 2008 R2 64-bit in Technical; I have 2 x Win 2003 Standard Edition DCs. I was thinking of prepping it using the following commands on ...
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    Win 2003 32-bit > Win 2008 R2 64-bit

    I have 2 x Win 2003 Standard Edition DCs. I was thinking of prepping it using the following commands on the PDC:

    adprep /forestprep
    adprep /domainprep
    adprep /domainprep /gprep
    adprep /rodcprep


    Question is, can I go from 2003 32-bit to a 64-bit of 2008 R2 (R2 installed on a seperate server and then DCPROMO'd), or does it need to remain 32-bit throughout everything?
    Last edited by Chuckster; 14th December 2009 at 11:11 PM.

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    jamesreedersmith's Avatar
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    No you can mix and match different flavours based on the hardware they are on.

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    Chuckster (15th December 2009)

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    Jon
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    The thing you need to watch is what version of adprep you use.

    On the 64bit 2008r2 disk there is "adprep" and "adprep32"...

    you need to run adprep32 from the 2008r2 disk on your existing 2003 DC

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    plexer (18th February 2010)

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    Quote Originally Posted by Jon View Post
    The thing you need to watch is what version of adprep you use.

    On the 64bit 2008r2 disk there is "adprep" and "adprep32"...

    you need to run adprep32 from the 2008r2 disk on your existing 2003 DC
    If I use adprep32 on 2003 from the 2008 R2 cd, does this mean 2008 R2 can be DCPROMO'd into an environment whereby both 2003 DCs aren't 64-bit?

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    Quote Originally Posted by Chuckster View Post
    If I use adprep32 on 2003 from the 2008 R2 cd, does this mean 2008 R2 can be DCPROMO'd into an environment whereby both 2003 DCs aren't 64-bit?

    yes the schema extensions itself does not target a specific processor, you just need to run the correct version of adprep depending on which os you run it from,

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    Jon
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    Quote Originally Posted by Chuckster View Post
    If I use adprep32 on 2003 from the 2008 R2 cd, does this mean 2008 R2 can be DCPROMO'd into an environment whereby both 2003 DCs aren't 64-bit?
    Yes, I am running like this at the moment. I do however intend to upgrade all DCs to 2008r2 64bit

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    Thanks guys. That's answered my question.

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    Quote Originally Posted by Jon View Post
    The thing you need to watch is what version of adprep you use.

    On the 64bit 2008r2 disk there is "adprep" and "adprep32"...

    you need to run adprep32 from the 2008r2 disk on your existing 2003 DC
    Just doing this now myself to integrate my new 2008 R2 DC before planning on retiring a 2003 DC and upgrading/reinstalling my other to 2008 R2 as well.

    All the instructions I read before this said to get the 32 bit version of adprep I had to download a 32 bit 2008 trial obviously all MS have for download now is 64 bit 2008 R2.

    Perfect.

    Ben

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    Quote Originally Posted by plexer View Post
    Just doing this now myself to integrate my new 2008 R2 DC before planning on retiring a 2003 DC and upgrading/reinstalling my other to 2008 R2 as well.

    All the instructions I read before this said to get the 32 bit version of adprep I had to download a 32 bit 2008 trial obviously all MS have for download now is 64 bit 2008 R2.

    Perfect.

    Ben
    in the sources folder of the 2008 r2 dvd should be adprep32(i think its there )

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    SYNACK's Avatar
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    In case there is any doubt there is indeed an adprep32.exe on the 2008r2 DVD which works fine as I used it just the other day on a 2003 box. As there was no 32 bit version of r2 they had to include it on the x64 DVD which is good.

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    plexer's Avatar
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    Yes sorry my post was meant to be more a case of confirming it was on the 2008 R2 dvd as I've just done it.

    Ben

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