Please can you explain how the above process is possible with a USB stick if it converts it back to FAT? I have tried this with an SD card and the windows media creation tool gives no option for where the ios is stored and then says insufficient space on the main drive.
Download as the ISO file, do not choose the create the USB installer option ( you can create the USB installer later if you want to have one), using the previously downloaded ISO file by using a free utility to do so. RUFUS is a popular (and good) such utility to use in such cases (if you so choose/want/need).
-Richard