I used this article, except that I used the vmkfstools -C vmfs6 -S BootDS command with the existing partition :3 (type vmfs)
https://darkglade.com/2019/07/05/building-a-datastore-on-your-esxi-boot-usb/
Also, how to license:
https://my.vmware.com/group/vmware/evalcenter?p=free-esxi6
Permanently Setting The Hostname
hostnamectl set-hostname