I was wondering why you folks seem to be converting the .wim file. I know it is larger than 4 GBs since I did a clean install yesterday after having downloaded the .iso. But, just in case you don't know, there is an easier way, .. The drive booted and the install started automatically, which I did not expect.
I did learn yesterday you can no longer make a partition active on a USB drive with either Diskpart or Disk Management.
@Saltgrass,
Looks like the active command works fine with DISKPART.
I'm just making an Installation USB media the same way that MCT does.
One Fat32 partition, that can boot on either UEFI or Legacy BIOS.
If the install.wim is bigger than 4,294,967,296 bytes it cannot be copied to a FAT32 disk so I just convert the install.wim to install.esd to stay below the limit.