Get 10 boot drives without using the C drive space.
Can you create a bootable USB without dedicating 16 GB for boot storage on a CD drive?
You can use Windows to Go on Windows 8/8.1/10 Enterprise or Education versions.
There’s no option using a different drive since you only have one with 1.4GB remaining on C and 2.5TB on E.
Do you need help creating a Windows installer? Just let me know. I have an ISO file available for you to use with another tool.