Sometimes we need to be able to use a USB Media to deploy Windows. Everything works well when booting to the Deployment server using the boot ISO on a USB stick. But when we do this from a full USB Media, with the exact same Task Sequences, it fails at the"Copy Scripts" step in Preinstall just after the "Format and Partition Disk" step. Same result for both BIOS and UEFI formatting. It works if I format the disk in DISKPART from the console.
How can this be?