To use Ventoy's Legacy Compatibility Mode, you can enable it by adding a configuration file (ventoy.json) on your Ventoy USB drive. This setting can improve compatibility with older hardware or legacy BIOS systems. Here’s how to set it up:

Steps to Enable Ventoy Legacy Compatibility Mode

1. Ensure You’re Using the Latest Ventoy Version

   • Download and install the latest version of Ventoy from the Ventoy official website.
   • Update your Ventoy USB drive with the latest version if you haven’t done so.

2. Create a ventoy.json Configuration File

   • Connect your Ventoy USB drive to your computer.
   • In the root directory of your Ventoy USB drive, create a new file named ventoy.json.

3. Add Legacy Compatibility Mode Setting in ventoy.json

   • Open ventoy.json in a text editor (like Notepad) and add the following configuration:

     json

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     { "control": [ { "VTOY_DEFAULT_MODE": "0" } ] }

   • This setting forces Ventoy to use Legacy BIOS mode for compatibility.

4. Optional: Enabling Additional Compatibility Options

   • In case you need additional compatibility options (such as remounting or specific hardware tweaks), you can add more settings in the ventoy.json file. Here’s an example with additional options:

     json

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     { "control": [ { "VTOY_DEFAULT_MODE": "0" }, { "VTOY_LINUX_REMOUNT": "1" }, { "VTOY_WIN11_BYPASS_CHECK": "1" } ] }

   • VTOY_LINUX_REMOUNT: Helps in Linux-based systems where certain file systems need remounting.

   • VTOY_WIN11_BYPASS_CHECK: If installing Windows 11 on unsupported hardware, this setting can bypass TPM and Secure Boot checks.

5. Save and Close the ventoy.json File

   • Save the changes and safely eject your USB drive.

6. Boot with Ventoy USB Drive on the Target System

   • Insert the USB drive into your older machine (in this case, your HP ProLiant server).
   • Boot from the Ventoy USB drive, and it should now use Legacy Compatibility Mode.

Additional Tips

• Try Different USB Ports: Some older systems work better with USB 2.0 ports rather than USB 3.0.
• Check Boot Order and Secure Boot: Ensure that Secure Boot is disabled and the boot order is set to USB first, especially for older BIOS systems.

By following these steps, your Ventoy USB drive will operate in Legacy Compatibility Mode, which may help resolve compatibility issues with older systems. Let me know if you have any issues during setup!