Auto—The Shell attempts to retrieve the startup script from the network location first, followed by locally attached media.
File Systems on Attached Media—The Shell looks for the
startup.nsh script file on a UEFI-accessible local file system, such as a FAT32 partition on a USB disk or HDD.
Network Location—The Shell looks for a
.nsh script at an HTTP/HTTPS or FTP location accessible to the system.