Create a folder on your computer where you will gather and organize the installation files. Here's an example folder structure (I think you made):
- The root folder (e.g., "Windows Multi-ISO"):
- autorun.inf
- bootmgr
- bootmgr.efi
- setup.exe
- boot (folder)
- efi (folder)
- system (folder)
- Win7x86 (folder)
- Win7x64 (folder)
- Win10x86 (folder)
- Win10x64 (folder)
- Win11 (folder)
And copy the respective installation files for each Windows version into their corresponding folders within the "system" folder. For example, copy the files for Windows 7 x86 into the "Win7x86" folder, the files for Windows 7 x64 into the "Win7x64" folder, and so on (As you did).
Optional: If you want to customize the behaviour of the autorun feature when the USB drive is inserted, you can modify the autorun.inf file using a text editor. You can specify the icon, labels, and actions for the USB drive. However, note that autorun functionality may be disabled on some systems for security reasons.
To create the ISO file, you'll need a tool capable of creating bootable ISO files. One popular tool is "ImgBurn," which is free and widely used. Here's a general outline of the steps using ImgBurn:
- Open ImgBurn.
- Select "Create image file from files/folders."
- Select the root folder ("Windows Multi-ISO") as the source.
- Choose the destination folder and filename for the ISO file.
- Adjust any other settings as desired.
- Click "Build" to start creating the ISO.
Once the ISO creation process is complete, you'll have a single ISO file containing Windows 7 x86, Windows 7 x64, Windows 10 x86, Windows 10 x64, and Windows 11. You can then write this ISO file to a USB drive using a tool like Rufus or the Windows USB/DVD Download Tool, making it bootable for installation or maintenance purposes.