Windows Server 2012 removes a child domain without a controller

Company in the domain set up a sub-branch, in the test process, accidentally the domain controller of the virtual machine back up the snapshot, the child domain controller disappeared ... The company decided to delete the subdomain.
Experimental purpose: Delete a subdomain without a controller.
Experimental environment: Virtual Machine 2 units
VM1:192.168.0.1/24 dc.abc.com primary domain controlled Windows Server 2012R2 Evaluation Edition
VM2:192.168.0.2/24 DC2 Windows Server 2012r2
Lab steps:
1, VM2:
1.1 Add vm2 to abc.com, step slightly;
1.2 Upgrade the VM2 domain controller;
1.3 The VM2 configuration domain controller is a subdomain of abc.com, dc2.son.abc.com
2, VM1:
Check if the subdomain is configured to complete
2.1AD services and sites to see if there is a VM2 subdomain controller
2.2 Domain trust relationship, see if the abc.com domain trusts son.abc.com
2.3ps:dsduery server to see if there are dc2.son.abc.comup
3, Snapshot vm1, close vm2
4, VM1:
Ps>ntdsutil
Ntdsutil.exe>metadata cleanup cleanup of unused servers
Metadata cleanup>connections connecting to the server
Server connections>connect to server dc.abc.com link to primary domain controller
Server Connections>quit exits after successful connection
Metadata cleanup>select opreation Target Select Site Server domain role and naming
Select Operation target>list Site View the list of sites to see the ID of the server without the entity computer, assuming the number 0,
Select Operation Target>select Site 0 Choose the server of ID 0, according to the actual situation selected sites
Select operation target>list Domains View list of domains
Select operation Target>list Server for domain is site to view servers within the domain of the sites, see the ID of the server being deleted assuming 0
Select operation Target>select Server 0
Select Operation Targer>quit launch choose Server Target command line
Metadata Cleanup>remove Select Server deletes the server within the subdomain, if there are multiple servers, repeat the above until the server in the domain is removed cleanly
Metadata Cleanup>remove Select Domain point y confirm, Delete selected subdomains
Metadata Cleanup>quit exit data Cleanup command line
Ntdsutil.exe>partition Management Role Manager
Partition management>list display domain role information for all DCS find subdomain DNS server FQN information, locate subdomain information
Partition management>delete NC dc=domaindnszones,dc=son,dc=abc,dc=com Delete subdomain information
Partition Management>list confirm whether to delete
Partition Management>quit exit
Ntdsutil.exe>quit Exit Ntdsutil tool

5. AD Sites and services find all server information within son.abc.com, right-click Delete
6, AD Domain and trust relationship-->abc.com right--look at the Trust menu, find Son,abc,con Point Delete
7. VM1 DNS Management Tools
7.1 Found son.abc.com right-click Delete
7.2 After restarting, check the DNS management tool within the abc.com for information about son.abc.com within the server to find the removal.
Over

This article from "Greek Yi" blog, reproduced please contact the author!