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A live USB is a portable USB-attached external data storage device containing a full operating system that can be booted from. The term is reminiscent of USB flash drives but may encompass an external hard disk drive or solid-state drive , though they may be referred to as "live HDD" and "live SSD" respectively.
A USB image is easier to carry, can be stored more safely than a conventional CD or DVD. Drawbacks are that some older devices may not support USB booting and that the USB storage devices lifespan might be shortened. Ubuntu has included a utility for installing an operating system image file to a USB flash drive since version 9.10. [1]
The operating system provides an interface between an application program and the computer hardware, so that an application program can interact with the hardware only by obeying rules and procedures programmed into the operating system. The operating system is also a set of services which simplify development and execution of application programs.
The usage share of an operating system is the percentage of computers running that operating system (OS). These statistics are estimates as wide scale OS usage data ...
Unix-like operating systems often include software and tools that assist in the mounting process and provide it new functionality. Some of these strategies have been coined "auto-mounting" as a reflection of their purpose. In many situations, file systems other than the root need to be available as soon as the operating system has booted.
Flash drives implement the USB mass storage device class so that most modern operating systems can read and write to them without installing device drivers. The flash drives present a simple block-structured logical unit to the host operating system, hiding the individual complex implementation details of the various underlying flash memory ...
In 2012, Microsoft Windows 8 Enterprise Edition followed, by introduced Windows To Go functionality to allow the operating system to boot and run from mass storage devices such as USB flash drives thus enabling BYOOS in the Windows family of operating system similar to that of a Linux live CD/DVD.
This list is for operating systems distributions that are specifically designed to boot off a (writable) USB flash drive, often called a USB stick. (This does not include operating system distributions with a simplified "installer" designed to boot from a USB drive, but the full OS is intended to be installed on a hard drive). Tin Hat Linux