1. They believe the heat source is the optical drive , the battery , or the computer 's ventilation fan .

2. OSGEAR Desktop PC Internal DVDRW SATA 24x DVD 56x Cd rom Built-in DVD Optical Drive Device Tray Loading Reader Writer Burner Support Windows XP 7 8 10

3. The options for the DVD drive on my Fedora 13 system come from udev rules, and that is why there is no entry in /etc/fstab for an optical drive.