Hello.
It is recommended to install VMware vSphere with the manufacturer's custom ISO in this case DELL, you can get it on the DELL website or My VMware (requires user and password / free registration)
link: https://my.vmware.com/group/vmware/downloads/info/slug/datacenter_cloud_infrastructure/vmware_vspher...
Try installing VMware vSphere from a USB key link: https://nolabnoparty.com/en/vmware-esxi-6-5-install-host-usb-stick/
Enrique Espinel
Senior Technical Support on IBM, Lenovo, Veeam Backup and VMware vSphere.
VSP-SV, VTSP-SV, VTSP-HCI, VTSP
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