Windows 7 does not contain USB 3.0 drivers, so when you boot from a USB drive from USB 3.0 port, Windows Setup will not be able to access the USB drive and you will get a 'Missing CD\DVD drive device driver' message box.
However, by combining a Windows 10 boot.wim with Windows 7 install.wim, it is possible to install Windows 7 from a USB drive connected to a modern USB 2.0 or 3.0 port.
I have written a short 'Tutorial #139' describing how to do it.
This method means that all types of USB controllers should work (as Win10 contains USB 3.0 drivers) and you don't have to mess about adding USB drivers to the Windows 7 boot.wim file.
However, you will have to add the USB 3 drivers to the Windows 7 OS once you have booted to Windows 7, but by then you should have web access and can download them (if available). Otherwise, you can always boot to the Win10 boot.wim and use XCOPY to copy the driver folder from your USB drive onto the Win7 hard disk.
You can use the same Win7+Win10 procedure to modify an ISO and add it to E2B, or you can use MakePartImage to convert a working USB Flash drive to a .imgPTN file and add that to E2B.
However, by combining a Windows 10 boot.wim with Windows 7 install.wim, it is possible to install Windows 7 from a USB drive connected to a modern USB 2.0 or 3.0 port.
I have written a short 'Tutorial #139' describing how to do it.
This method means that all types of USB controllers should work (as Win10 contains USB 3.0 drivers) and you don't have to mess about adding USB drivers to the Windows 7 boot.wim file.
However, you will have to add the USB 3 drivers to the Windows 7 OS once you have booted to Windows 7, but by then you should have web access and can download them (if available). Otherwise, you can always boot to the Win10 boot.wim and use XCOPY to copy the driver folder from your USB drive onto the Win7 hard disk.
You can use the same Win7+Win10 procedure to modify an ISO and add it to E2B, or you can use MakePartImage to convert a working USB Flash drive to a .imgPTN file and add that to E2B.