O'Reilly logo

Computer Evidence: Collection and Preservation, Second Edition by Christopher L. T. Brown

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Optical Discs

Optical discs have moved from being an extravagant expense to almost a necessity over the past 15 years. The pervasiveness of writable optical discs and removable flash media discussed later in this chapter has truly meant the death of the floppy in computing today. The widespread ability to write to and save data on an optical disc is what makes it of such interest to the forensics investigator.

CD-ROM optical discs differ from CD-R and CD-RW discs in that they do not have an organic dye recording layer between the polycarbonate substrate and the light reflective layer. It’s the organic dye recording layer that allows the laser in a CD-R or CD-RW device to be heated and thus create a pit, which is in turn read as digital data. ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required