Burn a CD or DVD from an ISO file in Windows 7

An ISO file, also called a disc image, is a single file that’s a copy of an entire data CD or DVD. When you burn a CD or DVD from an ISO file, the new disc has the same folders, files, and properties as the original disc. The most common way to get an ISO file is to download it from a website. For example, you might download and then use an ISO file to update software on your computer.

           You can burn a disc image file, which often has either an .iso or .img file name extension, to a recordable CD or DVD by using Windows Disc Image Burner. Whether you can burn it to a recordable CD, DVD, or Blu‑ray Disc depends on your disc burner and the type of discs it can burn, the size of the disc image file, as well as the device on which you plan to use the disc.

 1. Insert a recordable CD, DVD, or Blu‑ray Disc into your disc burner.

 2. Open Computer by clicking the Start button , and then clicking Computer.

 3. In Windows Explorer, find the disc image file, and then double-click it. 

 4. If you have more than one disc burner, from the Disc burner list in Windows Disc
     Image Burner, click the burner that you want to use.

 5. (Optional) If you want to verify that the disc image was burned correctly to the disc,
     select the Verify disc after burning check box.
    
     If the integrity of disc image file is critical (for example, the disc image file contains
     a firmware update), you should select this check box.

 6. Click Burn to burn the disc.