# Backup-Disk.ffu

This function is intended to be run in WinPE and will capture an FFU Disk Image.

## Requirements

* One or more Local Disks
* DataStore to save the Local Disk FFU
  * Secondary Disk
  * Network Share
  * USB Disk
    * Make sure you have a fast one.  This is not recommended

## Usage

There are no parameters to this function

### Source Disk

You will be prompted to select a Local Disk to backup if you have more than one disk, otherwise there is no selection.

### DataStore

You will always be prompted to select a DataStore.  The path is generated automatically based on the Computer Manufacturer, Model, and Serial Number

### Execution

Just type in FFU to start the process.  This may take some time

![](/files/-MWSOixsr8uOKVEI8gJq)

{% embed url="<https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/deploy-windows-using-full-flash-update--ffu>" %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://osd.osdeploy.com/docs/trash/disk/backup-disktoffu.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.