A Linux distribution is an operating system made from a software collection that includes the Linux kernel and often a package management system. Linux users usually obtain their operating system by downloading one of the Linux distributions, which are available for a wide variety of systems ranging from embedded devices and personal computers to powerful supercomputers.
A live CD is a complete bootable computer installation including operating system which runs directly from a CD-ROM or similar storage device into a computer's memory, rather than loading from a hard disk drive. A live CD allows users to run an operating system for any purpose without installing it or making any changes to the computer's configuration. Live CDs can run on a computer without secondary storage, such as a hard disk drive, or with a corrupted hard disk drive or file system, allowing data recovery.
Damn Small Linux (DSL) is a discontinued computer operating system for the x86 family of personal computers. It is free and open-source software under the terms of the GNU GPL and other free and open source licenses. It was designed to run graphical user interface applications on older PC hardware, for example, machines with 486 and early Pentium microprocessors and very little random-access memory (RAM). DSL is a Live CD with a size of 50 megabytes (MB). What originally began as an experiment to see how much software could fit in 50 MB eventually became a full Linux distribution. It can be installed on storage media with small capacities, like bootable business cards, USB flash drives, various memory cards, and Zip drives.
Puppy Linux is an operating system and family of light-weight Linux distributions that focus on ease of use and minimal memory footprint. The entire system can be run from random-access memory (RAM) with current versions generally taking up about 600 MB (64-bit), 300 MB (32-bit), allowing the boot medium to be removed after the operating system has started. Applications such as AbiWord, Gnumeric and MPlayer are included, along with a choice of lightweight web browsers and a utility for downloading other packages. The distribution was originally developed by Barry Kauler and other members of the community, until Kauler retired in 2013. The tool Woof can build a Puppy Linux distribution from the binary packages of other Linux distributions.
In Linux systems, initrd is a scheme for loading a temporary root file system into memory, to be used as part of the Linux startup process. initrd and initramfs refer to two different methods of achieving this. Both are commonly used to make preparations before the real root file system can be mounted.
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. They are the evolutionary next step after live CDs, but with the added benefit of writable storage, allowing customizations to the booted operating system. Live USBs can be used in embedded systems for system administration, data recovery, or test driving, and can persistently save settings and install software packages on the USB device.
Dreamlinux was a Brazilian computer operating system based on Debian Linux. It can boot as a live CD, from USB flash drive, or can be installed on a hard drive. The distribution's GUI aims to have a centered animated toolbar. As of October 2012, The Dreamlinux Project has been discontinued.
puredyne is a discontinued live Linux distribution based on Ubuntu and Debian Live and dedicated to live audio-and-visual processing and streaming. Its focus was on the Pure Data audio synthesis system as well as SuperCollider, Csound and others, plus live video-processing systems such as Processing and Fluxus. It also included hardware related software such as arduino and came bundled with home-studio and graphic design software.
Wubi is a free software Ubuntu installer, that was the official Windows-based software, from 2008 until 2013, to install Ubuntu from within Windows, to a single file within an existing Windows partition.
UNetbootin is a cross-platform utility that can create live USB systems and can load a variety of system utilities or install various Linux distributions and other operating systems without a CD.
remastersys is a free and open-source program for Debian, Ubuntu-based, Linux Mint or derivative software systems that can:
Grml is a Linux distribution based on Debian. It is designed to run mainly from a live CD, but can be made to run from a USB flash drive. Grml aims to be well-suited to system administrators (sysadmin) and other users of text tools. It includes an X Window System server and a few minimalist window managers such as wmii, Fluxbox, and openbox to use the graphical programs like Mozilla Firefox which are included in the distribution.
LinuxLive USB Creator is a free Microsoft Windows program that creates Live USB systems from installed images of supported Linux distributions. Due to time constraints the sole developer, Thibaut, halted support and updates for LinuxLive December 22nd, 2015.
balenaEtcher is a free and open-source utility used for writing image files such as .iso and .img files, as well as zipped folders onto storage media to create live SD cards and USB flash drives. It is developed by Balena, and licensed under Apache License 2.0. Etcher is a free, open-source tool that allows users to write images to portable storage media such as USB sticks and SD cards. Etcher was developed using the Electron framework and supports Windows, macOS and Linux. balenaEtcher was originally called Etcher, but its name was changed on October 29, 2018, when Resin.io changed its name to Balena.
Fully Automated Installation is a group of Shell and Perl scripts that install and configure a complete Linux distribution quickly on a large number of computers. It's the oldest automated deployment system for Debian.
Ventoy is a free and open-source utility used for writing image files such as .iso, .wim, .img, .vhd(x), and .efi files onto storage media to create bootable USB flash drives. Once Ventoy is installed onto a USB drive, there is no need to reformat the disk to update it with new installation files; it is enough to copy the .iso, .wim, .img, .img(x), or .efi file(s) to the USB drive and boot from them directly. Ventoy will present the user with a boot menu to select one of these files.
The Linux kernel can run on a variety of devices made by Apple, including devices where the unlocking of the bootloader is not possible with an official procedure, such as iPhones and iPads.
