Upgrading to Windows Server 2012
When upgrading an existing server to Windows Server 2012, all configuration settings, files, and programs are retained from the previous installation. However, there are still several important required tasks that you perform before the upgrade, as discussed in the following sections.
Note
When upgrading a system to Windows Server 2012, you need to have at least 1237MB of free space on the system partition; otherwise, the upgrade will come to a halt.
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