iso media works the same way.load up the first Blue Screen and press either SHIFT+F10 or SHIFT+Fn+F10. Furthermore, if you can't get Windows 8/8.1/10 to load the Command Prompt by Pressing the aforementioned keys, just select the 'Repair Your Computer' link in the Windows Install interface and then select 'Troubleshoot' and then 'Command Prompt'. *Note: For Windows 8/8.1/10 users you may need to hold SHIFT+Fn+F10 simultaneously. This is an ELEVATED Command Prompt which makes you all powerful. When the Windows All In One loads to the very first Blue Screen hold SHIFT+F10*, simultaneously, and the command prompt will appear. *Note: For Windows 8/8.1/10 users you need to enter 'BIOS Security Settings' and DISABLE Security Boot and ENABLE Legacy Boot (select 'Yes' to continue if it gives you a prompt about changing system settings, I assure you it's fine). Then by selecting 'One Time Boot Options/Selection' (typically by pressing 'Esc', 'F2', 'F9', 'F10', or 'F12' at startup) and selecting the 'USB' or '' or entering BIOS Settings (pressing 'Esc', 'F2' or 'F12 at startup) and setting the boot order to boot to flash drive 1st* and boot up the newly created image on the flash drive. Then, using a program called Rufus: create a bootable flash drive. If you just want to access the Windows Command Prompt (CMD) quickly and easily - you'd want to get your hands on a windows 7 iso.

Boot usb flash with total commander