HyperVM is a virtualization management platform that provides a web-based interface to manage virtual machines. To enable pygrub in HyperVM, follow these steps:

1. Log in to HyperVM:

   Open your web browser and navigate to the HyperVM control panel.

2. Access Virtual Machine Configuration:

   Locate the virtual machine for which you want to enable pygrub and select it from the list.

3. Edit Virtual Machine Configuration:

   Once you've selected the virtual machine, look for an option to edit its configuration. This is typically labeled as "Edit VM Configuration" or something similar.

4. Locate Boot Options:

   Within the virtual machine's configuration settings, look for the boot options. This is where you'll find settings related to the boot process.

5. Select pygrub as Boot Loader:

   In the boot options section, there should be an option to select the boot loader. Choose pygrub from the available options.

6. Save Changes:

   After selecting pygrub as the boot loader, save the changes to the virtual machine's configuration.

7. Restart the Virtual Machine:

   In order for the changes to take effect, you'll need to restart the virtual machine.

Please note that the specific steps and options in HyperVM may vary depending on the version and configuration of the platform. Always refer to the official HyperVM documentation or consult with the HyperVM support team for the most accurate and up-to-date information.

Additionally, remember to exercise caution when making changes to virtual machine configurations, especially those related to boot loaders, as incorrect settings can prevent the virtual machine from booting properly.