If you have required to make bootable Pendrive then you can create bootable Pendrive using software or command line. Command-line is the best way to make bootable installer windows 7, 8.1 and 10 also those tools support bootable windows server.

diskpart 
List Disk
Select Disk 1
Clean
Create Partition Primary
Select partition 1
Active
format fs=ntfs quick
exit
xcopy *.* /s/e/f x:\

You can also create a bootable Pendrive via Rufus software.