Ok. So I became the IT Admin of a company that is still operating as a Workgroup (in terms of the company) and I am trying to get us all on a domain. Shouldn't be to difficult I think...only a few issues that I am not fully aware what it will effect.
Currently we HAVE a server already made a few years back that is a "domain controller" that is just sitting there operating as our DNS. The previous IT set all computers IP addresses to static along with the DNS connection of course. The problem I am running into when wanting to set up this as our domain controller is, well, it has the wrong domain name. This company got renamed and we use a different domain name now (albeit we still own the old one but I am not sure how long we should keep it so I prefer not to use it in our DC).
The problem I am worried about is this server is already operating as the DNS for all our computers, so I am worried about demoting/re promoting the server in order to rename the DC, because I am not fully aware what this will effect for our users.
TL;DR
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So I want to change our companyold.com connection to companynew.com connection in our domain controller as well as rename the server. Problem is Server runs as a DNS already. I would like step by step instructions of what I can do so I can rename the server/DC without breaking my current DNS setup and have it work like it has been.
We use Windows Server 2008 R2 Standard