Create Bootable ISO from Bootable USB, DVD, Folder

How to convert a bootable USB to an .iso image file for later re-use.\r
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The instructions for USB to .iso are as follows (for a Windows 10 installation for example):\r
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Install ImgBurn. You can even get a portable version of it, just search for it.\r
Plug the bootable USB into the computer\r
Start ImgBurn.\r
Click on the “Create image file from files / folders” button on the home menu.\r
In “Sources” browse to the USB drive.\r
In “Destination” choose where to save the final .iso image.\r
Go to the “Advanced” tab on the right and then “Bootable Disk”.\r
Check the box “Make Bootable Image” and then, in the “Boot image” box browse to file “etfsboot.com” that is in the USB stick found in the folder “boot”.\r
In the field “Developer ID” put “Microsoft Corporation” and enter “07C0” in the “Load Segment” field.\r
Enter ‘4 in the ‘Sectors To Load field if your etfsboot.com file is 2K is size, enter ‘8 if its 4K. In other words, x = size of etfsboot.com in bytes / 512.\r
Click “Build” and youre done!\r
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