# Manage masters

[![mastergestionpublic.png](https://docs.medulla-tech.io/uploads/images/gallery/2025-05/scaled-1680-/mastergestionpublic-png.png)](https://docs.medulla-tech.io/uploads/images/gallery/2025-05/scaled-1680-/mastergestionpublic-png.png)  
A **master** is a complete system image created from a configured workstation. It serves as a template for quickly and consistently deploying an environment to other machines.

Before any deployment, it is essential to know which masters are available and how to use them.

#### Reading the displayed information

Each master is presented as a line containing several elements:

- **Label**: automatic identifier for the image.
- **Description**: optional text describing the image’s content or purpose.
- **Creation date**: indicates when the image was generated.
- **Compressed size**: size of the image file (expressed in GB).
- **Default startup menu**: specifies whether the image is used automatically during network startup.
- **Actions**: set of options available for the image.

#### Use a master for deployment

- **Select a master** from the list.
- **Check its date,** description, and size to ensure it matches what you want to deploy.
- **Select the image** as the basis for deploying one or more workstations via the dedicated interface.

The master system will be automatically installed on the target workstations, without requiring manual intervention on each machine.

#### Actions available for each image

For each master, you can perform several operations:

- **Add to the default boot menu**
    
    Allows you to set the image as the one automatically used during a workstation’s network boot (useful if you perform frequent deployments).
- **Create a bootable ISO**  
    Generates an ISO file from the image, which you can then copy to a USB drive or CD to boot a computer offline.
- **Edit the image**  
    Modify the information associated with the image, such as the description or name.
- **Clone the master**  
    Creates a copy of the current image. This allows you to create a new version without modifying the original.
- **Delete**  
    Permanently deletes the image from the server. This action is irreversible.

<article class="text-token-text-primary w-full" dir="auto" id="bkmrk-avant-d%E2%80%99utiliser-un-"><p class="callout info">Before using a master, verify that it matches the desired configuration, including the operating system, version, and installed software. Only delete a master if you are certain it is no longer in use, as this action is irreversible. If you are unsure which image to choose or what action to take, it is recommended that you contact your technical support representative for guidance.</p>

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