A useful flowchart for WinPE\Setup.exe\Winpeshl.exe\Startnet.cmd\wpeinit.exe is here.
Files ending in .iso64 will only be listed in the menu if a 64-bit CPU is present (.iso32 also supported) (E2B v1.94+).
Note: Some Windows Install ISOs may work if you give them a .iso or .isope01 file extension and place them in an ordinary folder (e.g. \_ISO\MAINMENU). If they don't work as .isoPE01 then use them as .ISO files and place them in the correct \_ISO\WINDOWS\xxxx folder.
Windows Install ISOs may cause E2B to use the WIMBOOT method which does not require a Removable USB drive to be used.
.imgPTN files will work from most folders (except \_ISO\WINDOWS\XP).
You can rename the ISOs and use spaces in the ISO filenames to make them look better in the menu if you wish (or add a .txt file - see below).
E2B v1.A8+ allows booting of Windows Vista-10 ISOs without the need of a WinHelper USB fash drive by using WIMBOOT.
WinHelper Flash drive
If you are booting Easy2Boot from a USB Hard disk to install from Windows Install ISO files, you may also need a USB 'WinHelper' flash drive containing these 3 files -
AutoUnattend.xml (overwritten by E2B - required for Win Vista and later OS Install ISOs),
Unattend.xml (overwritten by E2B - required for WinPE ISOs)
WINHELPER.USB (marker file to find correct USB drive)
These 3 files must be on the root of your USB 'Helper' Flash drive . Do NOT modify them - they are modified by E2B automatically.
You may find it easier to convert the ISO file to a .imgPTN file. This will allow you to both MBR and UEFI-boot and you will not need a 'Helper' Flash drive or an XML file. E2B v1.75 allows you to add .imgPTN files to the \_ISO|WINDOWS\xxxx folders (except for the XP folder).
NOTE: Always run WinContig to ensure all files are contiguous after copying them over (Ctrl+F2 in RMPrepUSB).
Always use unmodified Microsoft Windows Install ISOs - if you use a modified ISO, it may not work. In this case, convert the ISO to a .imgPTN file using MakePartImage.
USB 3.0 support
Windows 7 install ISOs do not support USB 3.0 adapters/chipsets or modern USB controllers, so if you want to boot from a USB 3.0 port, you will need to add the USB 3.0 drivers to the ISO. Even if you are using a USB 2.0 port, it may be that Windows does not contain the correct drivers for the USB 3.0 controller chip if it is a modern PC/notebook.
Check if the Windows can 'see' your USB drive:
1. After booting to Setup, type SHIFT+F10 to open a console window.
2. Type 'diskpart' and press ENTER key.
3. Type 'list disk' - check that your USB drive is listed - if not, then Windows (WinPE) does not contain the correct driver for your USB controller.
4. Type 'exit' to quit diskpart.
Another alternative is to boot to a Windows 10 ISO so that you have access to USB 3 devices and then run WinNTSetup to install from a Windows 7 ISO.
Britec's video shows how to use different tools to add USB 3 drivers to a .imgPTN flat file USB drive or a ISO file.
There is a video showing how to modify an ISO or USB drive here.
See here for how to add the correct USB driver into the ISO file. Also YouTube video here.
Rather than modify the boot.wim file, we can just replace it with a Windows 10 boot.wim - we can then at least install Windows 7 - see here.
Add a .txt file to change the text in the menu
You can also add a .txt file of the same filename and add an alternate title (rather than have the filename listed in the menu).
If you also add a .txt file of the same filename containing a single line of text such as:
then that text will be used as the menu title instead of the name of the file itself(note that the line must start with the lower-case word'title'). See here for more details.
Note: .iso files of 0 length are not listed (but may add to the total file count displayed in the menu!).
Add your own .xml file to automate an install
You can also have your own unattend.xmlfiles in the same folder as your ISO file (any name but must end in .xml). This can contain all your settings and a product key - you can just choose any xml file before you run the ISO. If you delete all .xml files from the Vista/7/8/SVR2012 folders, then the default unattend.xml will be automatically used and the user will not be prompted to select an xml file.
For an example look at the \_ISO\e2b\firadisk\au.xml file (for Vista and Win7) and the \_ISO\e2b\firadisk\auWin8.xml file (for Win8). These contain a special section which runs LOADISO.cmd - this is responsible for loading the ISO so that Windows Setup can access it as a DVD.
E2B will copy the contents of your XML file to \AUTOUNATTEND.XML before it boots from the ISO.
Your XML file must be modified so that it runs ImDisk via LOADISO.cmd to install the ISO as a virtual DVD drive.
Windows 7 does not support USB 3.0 as it does not contain USB 3.0 drivers. However, you can convert a Win7 Install ISO to a .imgPTN file, switch to the .imgPTN partition and then modify the boot.wim and install.wim to add the USB 3.0 drivers. See here for more details. If you just want to add Intel chipset USB 3.0 drivers, you can use the nice Intel utility here.
If the file DEFAULT.XML exists in the same folder as the ISO, then the DEFAULT.XML file will be automatically picked by E2B (E2B v1.B0+).
If only one XML file exists in the same folder, it will be automatically selected.