To install ESXi 8, follow these steps:
- Download the ESXi ISO file from the VMware website.
- Burn the ISO file to a CD or USB drive. (for installing ESXi in a VM, you can directly mount the ISO)
- Boot the server from the CD/USB drive.

- Press Enter to install ESXi.

- Accept the End User License Agreement.

- Select the disk to install ESXi on and press Enter.

- Select keyboard layout and continue.

- Enter root credentials and press enter to continue

- Press F11 to confirm install.

- Wait for the installation to complete. Once installation is completed, press enter to reboot the host.

- Configure network settings, hostname and root password from DCUI post reboot.

Note: This is a general outline. For detailed instructions, it is recommended to refer to the VMware documentation for the specific version of ESXi you are installing.