Your Server Before the Roles

It is interesting to note that when you install additional features you can do so without inserting the installation disk. That is because all the bits needed to support every role and feature are copied to the hard disk during the initial installation. This means that the files are actually already there. They are not, however, present in their normal locations in the file system in their final form. Rather, they are stored in the %systemroot%\winsxs directory. This is important to features such as Telnet Client and TFTP Client. Those features are nothing more than the executables being present in the file system. To be able to execute these programs, the associated catalog and manifest files must also be installed, ...

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