Minimum Requirements https://docs.vmware.com/en/VMware-vSphere/6.7
vSphere Installation Workflow
Installation Procedure https://docs.vmware.com/en/VMware-vSphere/6.7/vsphere-esxi-67-installation-setup-guide.pdf
Summary of installation
Verify that your system meets the minimum hardware and system requirements.
Determine where you want to locate and boot the ESXi installer.
Insert the ESXi installer CD/DVD into the CD/DVD-ROM drive, or attach the Installer USB flash drive and restart the machine. Set the BIOS to boot from the CD-ROM device or the USB flash drive.
Read and accept the agreement, continue.
On the Select a Disk page, select the drive on which to install ESXi, and press Enter.
Select the keyboard type for the host.
Enter the root password for the host.
Confirm the installation process.
When the installation is complete, remove the installation CD, DVD, or USB flash drive.
Press Enter to reboot the host.
Set the first boot device to be the drive on which you installed ESXi.
Basic Configuration of the ESXi Host
Troubleshooting Notes Disable IPv6 and reboot EXSi host Result :