> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gcore.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Install an OS from an ISO image in VMmanager 6

[VMmanager 6](/hosting/virtual-servers/manage/main-features-and-functions-of-vmmanager-6) supports installing an operating system from a custom ISO image. Provide a public HTTP, HTTPS, or FTP URL to an ISO file (up to 8 GB). Only one ISO image can be mounted to a server at a time.

<Note>
  During ISO installation, the following operations are unavailable: root password editing, creating ISO images, and running automation scripts while the ISO is loading.
</Note>

<Steps>
  <Step title="Open VMmanager 6">
    Log in to the [Hosting portal](https://hosting.gcore.com/billmgr), navigate to **Products/Services** → **Virtual private servers**, select the checkbox next to the server, and click **To panel**.

    <Frame>
      <img src="https://mintcdn.com/gcore/bP_M3iNvkCNJWoX1/images/docs/hosting/virtual-servers/manage/operating-system/install-an-os-from-iso-in-vmmanager-6/install-an-os-from-iso-in-vmmanager-6-image1.png?fit=max&auto=format&n=bP_M3iNvkCNJWoX1&q=85&s=2273bd7f54ceb16b1cab2afe8cae025e" alt="BILLmanager Virtual private servers list with a server row selected and To panel button highlighted in the toolbar" width="1740" height="442" data-path="images/docs/hosting/virtual-servers/manage/operating-system/install-an-os-from-iso-in-vmmanager-6/install-an-os-from-iso-in-vmmanager-6-image1.png" />
    </Frame>
  </Step>

  <Step title="Open the ISO mount menu">
    In VMmanager, open the three-dot menu next to the server and select **Mount ISO-image**.

    <Frame>
      <img src="https://mintcdn.com/gcore/bP_M3iNvkCNJWoX1/images/docs/hosting/virtual-servers/manage/operating-system/install-an-os-from-iso-in-vmmanager-6/install-an-os-from-iso-in-vmmanager-6-image2.png?fit=max&auto=format&n=bP_M3iNvkCNJWoX1&q=85&s=7a309daba582c9f4f55ee77643a70e05" alt="VMmanager Virtual machines list with the three-dot menu open and Mount ISO-image highlighted" width="1500" height="556" data-path="images/docs/hosting/virtual-servers/manage/operating-system/install-an-os-from-iso-in-vmmanager-6/install-an-os-from-iso-in-vmmanager-6-image2.png" />
    </Frame>
  </Step>

  <Step title="Enter the ISO URL">
    Enter the URL where the ISO image is hosted. Optionally, add **Tags** to trigger VMmanager automation scripts that have matching tag values.

    <Frame>
      <img src="https://mintcdn.com/gcore/bP_M3iNvkCNJWoX1/images/docs/hosting/virtual-servers/manage/operating-system/install-an-os-from-iso-in-vmmanager-6/install-an-os-from-iso-in-vmmanager-6-image3.png?fit=max&auto=format&n=bP_M3iNvkCNJWoX1&q=85&s=ba9b9b04218a2e0c5f2341196dc16dbc" alt="Mount ISO-image dialog with URL field and Tags field" width="784" height="716" data-path="images/docs/hosting/virtual-servers/manage/operating-system/install-an-os-from-iso-in-vmmanager-6/install-an-os-from-iso-in-vmmanager-6-image3.png" />
    </Frame>
  </Step>

  <Step title="Mount and install">
    Click **Download and connect**. VMmanager downloads the ISO and restarts the server from it. Connect via [VNC](/hosting/virtual-servers/manage/connect/connect-to-a-virtual-server-via-vnc) and follow the installer prompts to complete the OS setup.
  </Step>
</Steps>

<Note>
  After the installation is complete, disconnect the ISO image to restore normal boot: open **Virtual disk** in the left sidebar, disconnect the mounted ISO image, and restart the server.
</Note>