An ISO file contains a disk image of files or folders from your computer or of a physical CD. You can use a bootable ISO to burn a bootable CD that you can use to start your computer in case of an operating system problem. Nero 7 Ultra contains the Nero Burning ROM utility that lets you create bootable ISO files that you can burn to CDs and DVDs.
Open Nero Burning ROM and select "New" on the main screen. Choose "CD-ROM (Boot)" from the "CD" drop-down menu if you wish to make an ISO image for a CD. Choose "DVD-ROM (Boot) from the "DVD" drop-down menu if you wish to make an ISO image for a DVD.
Select the source of the template data for your bootable ISO. Choose "Bootable logical drive" in the "Source of boot image" area and locate the floppy drive or bootable hard drive that has the template information. If an image file contains the template data, select "Image file" from the "Source of boot image" area and browse for the file. Choose a language in the "Boot locate" drop-down menu for you to use an image file and select the "Enable expert features" check box. Choose an "Emulation type" from the drop-down menu.
Select any additional options that you wish on the "New Compilation" window and click "New." Choose the files and folders that you wish to put on the bootable ISO by dragging them to the "Compilation Area."
Select "Nero Image Recorder" from the drop-down menu and click "Burn." Click "Burn" again and enter a name and location for your bootable ISO file in the "Save Image File" window. Click "Save" and then "OK" to finish making the ISO.