Insert the USB into your target machine and select it as the primary boot device in the BIOS/UEFI.
Absolute minimum of 4 GB , though 8 GB to 12 GB is recommended for production. download vmware vsphere hypervisor -esxi- 6.7
Once you have the ISO file (typically named something like VMware-VMvisor-Installer-6.7.0...iso ), follow these steps: Insert the USB into your target machine and