I have a Secondary/Backup DC (, Primary Died, computer crashed, it wont
be turned on again) which I promoted to primary (didnt sieze schema
master
role)
and then merged users and computer to a new dc with a different domain
name,
used ADMT and now all computers are on the new domain .
I wont to get rid of the old DC by demoting it or can i just remove the
trust between the new and old domain and formatt the old DC?

If not do i have to seize all of the FSMO roles before demoting it ?
Any other tips what has to be done?

Below are a couple articles on demoting dc, and deleting failed dc.

http://www.petri.co.il/forcibly_removing_active_directoy_from_dc.htm

http://www.petri.co.il/delete_failed_dcs_from_ad.htm

Thanks,
http://www.windowsactivedirectory.com/


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KamranSafavi
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Hello polilop,

If you have all migrated to the new domain what you need to remove the trust.
Now you can demote the source domain DCs.

As you have already created a new domain, you should have on that one all
FSMOs available. The source domain FSMOs wan't be migrated to the new one.
You can check with "netdom query fsmo" in a command prompt on the new domain,
to be sure they are on the new DCs.

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
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> I have a Secondary/Backup DC (, Primary Died, computer crashed, it
> wont
> be turned on again) which I promoted to primary (didnt sieze schema
> master
> role)
> and then merged users and computer to a new dc with a different
> domain
> name,
> used ADMT and now all computers are on the new domain .
> I wont to get rid of the old DC by demoting it or can i just remove
> the
> trust between the new and old domain and formatt the old DC?
> If not do i have to seize all of the FSMO roles before demoting it ?
> Any other tips what has to be done?

Check out an artcile I have on Decommissiong a DC at:
http://www.pbbergs.com/windows/articles.htm

This will help you t hrough all the steps you should follow.

--
Paul Bergson
MVP - Directory Services
MCTS, MCT, MCSE, MCSA, Security+, BS CSci
2008, 2003, 2000 (Early Achiever), NT4
Microsoft's Thrive IT Pro of the Month - June 2009

http://www.pbbergs.com

Please no e-mails, any questions should be posted in the NewsGroup This
posting is provided "AS IS" with no warranties, and confers no rights.

"polilop" <fmatosicAT@st.htnet.hr> wrote in message
news:%232aFrzqbKHA.1028@TK2MSFTNGP06.phx.gbl...
> I have a Secondary/Backup DC (, Primary Died, computer crashed, it wont
> be turned on again) which I promoted to primary (didnt sieze schema
> master
> role)
> and then merged users and computer to a new dc with a different domain
> name,
> used ADMT and now all computers are on the new domain .
> I wont to get rid of the old DC by demoting it or can i just remove the
> trust between the new and old domain and formatt the old DC?
>
> If not do i have to seize all of the FSMO roles before demoting it ?
> Any other tips what has to be done?