If you already have an ISO image, go to Tools+Burn CD image. A window opens in which to enter the location of the Image to Burn. K3b calculates a check sum and displays it in MD5 Sum. If the ISO file was downloaded from the Internet, this sum shows if the download was successful.

Use the Options and Advanced tabs to set your preferences. To burn the CD, click Start.

To burn an ISO image to DVD, go to Tools+Burn DVD ISO image and select the image to burn. Specify the writing mode and number of copies and choose the appropriate writing option. Check Verify written data to check the data integrity of the final DVD.