and restoration testing new versions of software listing & testing hardware Internet kiosks and public computers, which can be brought back to their original state by a reboot high security/non-invasive environment for a guest cracking, stealing, and changing passwords network security testing being the primary or backup operating system for any computer quick and simple clustering of computers playing video games or running applications that require a different operating system providing a secure server platform where crucial files cannot be permanently altered providing a secure, reliable platform for the performance of high-vulnerability tasks such as internet banking; Bypassing parental controls and other restrictions Several live CDs are dedicated to specific type of applications according to the requirements of thematic user communities. These CDs are tailored to the needs of the applications in subject including general knowledge, tutorial, specifications and trial data too. Some of these topics covers sub topics, e.g. IT administration breaks down to firewall, rescue, security, etc. type of live CDs. In some cases a particular Live DVD covers more than one topic. Software appliances Packaging a software appliance as an installable live CD, or live ISO, can often be beneficial as a single image can run on both real hardware and on most types of virtual machines. This allows developers to avoid the complexities involved in supporting multiple incompatible virtual machine images formats and focus on the lowest common denominator instead. Typically after booting the machine from the live CD, the appliance either runs in non-persistent demo mode or installs itself, at the user's request, to an available storage device. Mounting without burning The files on a live CD ISO image can be accessed in Microsoft Windows with a disk image emulator such as Daemon Tools, or in Unix variants by mounting a loop device. Later versions of Windows (i.e. Windows 8 and later), and software available for earlier versions, allow an ISO to be mounted as a volume. After mounting the live CD's filesystem, software on the live CD can be run directly, without booting it, by chrooting into the mounted filesystem. A live CD ISO image can also be mounted by Virtual Machine software such as VirtualBox and VMware Workstation or can be converted to a Live USB using SYSLINUX. Special tools can automate this process. Features During live CD initialization, a user typically may resort to using one or more boot codes to change