Step 1: Download and Install Xilisoft ISO Pro
Download Xilisoft ISO Pro here and install the application on your computer.
Step 2: Start Xilisoft ISO Pro and Load files
Click "Add File(s)" button on the toolbar or click "File > Add File" to load files you want. Or click "Add Folder" button on the toolbar or click "File > Add Folder" to load folder.

After loading files, you can create folder to adjust the file structure in the image file by clicking "New Folder" button on the toolbar or "File > New Folder" option in the main menu. From the capacity bar at the bottom of the main interface, you can check the total file size.
Step 3: Adjust output settings
Click "Browse" button to specify the target folder to save the ISO image file and enter a file name in the "File Name" box.

Step 4: Start making ISO image
After all above are set, click "Make Image File" button at the right bottom to start making ISO image file.

You can check the detailed progress like remaining time, remaining size, percentage completed and so on from the progress bar at the bottom.
After making completed, you can click "Open" button beside the "Browse" button to view the output ISO image file directly.
