# Apply operating system from cloud

The **Apply Operating System from Cloud** step is similar in many ways to the **Apply Operating System** step.  Both apply a WIndows image (.wim) file, with an optional unattend.xml, to the volume formatted as S: by the **Format disk** step.  Unlike the Apply Operating System step, the operating system to be applied can be downloaded directly from Windows update.

<figure><img src="/files/40bYpcSTntgKSeewg4uQ" alt=""><figcaption></figcaption></figure>

To determine which image to apply, select the operating system, version, language, edition, and architecture for the OS.


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