Unfortunately, Windows will recognize only the first partition on a usb flash drive. This means that even if you create a multi-partitioned usb flash drive, Windows will not mount the other volumes or assign drive letters to them, in fact that Windows completely unable to access these partitions. This is way WinToUSB will force format the USB flash drive to one partition.
In order for Windows To Go drive to work properly, the boot partition must be 16G or bigger, the bigger the better.
In order for Windows To Go drive to work properly, the boot partition must be 16G or bigger, the bigger the better.