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First off, you should provision more disk space from within the VMware infrastructure - basically look at the properties of the VM within the vSphere client and expand the disk for the domain controller.<br />
<br />
Then you should be able, without rebooting the guest (virtual domain controller) to do pretty much what you just tried.<br />
<br />
Do ensure you have a good backup first as you're messing with the disk infrastructure and if anything goes wrong...
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First off, you should provision more disk space from within the VMware infrastructure - basically look at the properties of the VM within the vSphere client and expand the disk for the domain controller.

Then you should be able, without rebooting the guest (virtual domain controller) to do pretty much what you just tried.

Do ensure you have a good backup first as you're messing with the disk infrastructure and if anything goes wrong...

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this help to know where the vmware file to backup
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this help to know where the vmware file to backup

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Dear Experts<br />
<br />
We want to increase size &nbsp;for C drive on windows 2008 r2 installed on VM Ware esxi 4.1.with out format C drive or reinstall OP and be in safe place. It primery DC server.<br />
when right click on drive from Manager can not see extand option to add more space.<br />
how we can &nbsp;pefom the task.
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Dear Experts

We want to increase size  for C drive on windows 2008 r2 installed on VM Ware esxi 4.1.with out format C drive or reinstall OP and be in safe place. It primery DC server.
when right click on drive from Manager can not see extand option to add more space.
how we can  pefom the task.

C drive Increase space on windows 2008 r2 server

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.

Microsoft Legacy OS

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.

Microsoft Server OS

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.