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The operating system loads from the USB device either to load it much like a Live CD that runs OS or any other software from the storage or installs OS itself. USB image runs off of the USB device the whole time. 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 ...
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]
A modern PC is configured to attempt to boot from various devices in a certain order. If a computer is not booting from the device desired, such as the floppy drive, the user may have to enter the BIOS Setup function by pressing a special key when the computer is first turned on (such as Delete, F1, F2, F10 or F12), and then changing the boot order. [6]
Multiboot is environmental technology since it requires only a single storage device to boot multiple files. " Persistence " is the ability, for a Linux Live distribution, to save the changes (to e.g. software, documents, parameters, etc) in the live USB across reboots.
Ventoy is a free and open-source utility used for creating bootable usb media storage device with files such as .iso, .wim, .img, .vhd(x), and .efi.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, .vhd(x), or .efi file(s) to the USB drive and boot from them directly.
The Ultimate Boot CD contains freeware and open-source diagnostic tools from a variety of sources. Many of these tools were originally designed to boot from a floppy disk drive. The Ultimate Boot CD made it possible to run them on a PC without a floppy drive. [5] UBCD can also run from USB for computers without an optical drive. [5]
This version provides a "LightsOut Restore" feature, which restores a system from an on-disk software recovery environment similar to Windows RE, thereby allowing recovery without a bootable CD. Upon system startup, a menu asks whether start the operating system or the LightsOut recovery environment.
Self-booting disks require the system to turned on or rebooted to use the software. The user cannot switch between programs. The software can only exist on its own floppy disk, not stored on a disk with multiple programs, such as a hard disk drive.