Knoppix Security Tools Distribution (STD) is a collection of tools for configuring security measures, including computer and network forensics. Note that KnoppixSTD is forensically sound, so it doesn’t allow you to alter or damage the system you’re analyzing. You can download the ISO image at www.knoppix-std.org and create a bootable CD with it. If you boot this CD into Windows, Knoppix lists available tools. Although many of the tools have GUI interfaces, some are still command line only. If you right-click each category while booted in Linux, a section called rtfm has a README file for each application. , Knoppix-STD is a Linux bootable CD. If you shut down Windows and reboot with the Knoppix-STD disc in the CD/DVD drive, your system boots into Linux
Additional Source: Nelson, B., Phillips, A., Steuart, C. Guide to computer Forensics and Investigations 4E Chapter 7 PG 276.