KNOPPIX is a bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. KNOPPIX can be used as a Linux demo, educational CD, rescue system, or adapted and used as a platform for commercial software product demos.

It is not necessary to install anything on a hard disk.
Due to on-the-fly decompression, the CD can have up to 2 GB of executable software installed on it.

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