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Live USB operating systems and/or Linux distributions. This means you can use them by booting off a USB flash drive . The main article for this category is Live USB .
Many Linux distributions make ISO images available for burning to CD or DVD. While open source operating systems can be used for free, some commercial software, such as Windows To Go requires a license to use. Many live CDs are used for data recovery, computer forensics, disk imaging, system recovery and malware removal.
The Multiboot specification is an open standard describing how a boot loader can load an x86 operating system kernel. [1] [2] The specification allows any compliant boot-loader implementation to boot any compliant operating-system kernel.
When interrupt 19h is called, the BIOS attempts to locate boot loader software on a "boot device", such as a hard disk, a floppy disk, CD, or DVD. It loads and executes the first boot software it finds, giving it control of the PC. [28] The BIOS uses the boot devices set in Nonvolatile BIOS memory , or, in the earliest PCs, DIP switches.
MemTest86(+) is designed to run as a stand-alone, self-contained program from a bootable USB flash drive, CD-ROM, floppy disk, or from a suitable boot manager without an operating system present. [24] This is because the program must directly control the hardware being tested and leave as much of the RAM space as possible for examination.
BartPE (Bart's Preinstalled Environment) is a discontinued tool that customizes Windows XP or Windows Server 2003 into a lightweight environment, similar to Windows Preinstallation Environment, which could be run from a Live CD or Live USB drive.
Prior to the use of recovery discs, one would use a boot disk to boot the system, then reinstall software as necessary from the original installation media. A contemporary alternative, particularly used in Linux, is the installation disc or discs for a Linux distribution, or a Live CD or Live DVD – a bootable disc. These can be used to boot ...
This installation mode performs a network installation or "frugal install" without a CD, similar to that performed by the Win32-Loader. [4]UNetbootin's distinguishing features are its support for a great variety of Linux distributions, its portability, its ability to load custom disk image (including ISO image) files, and its support for both Windows and Linux. [5]