What does bootable mean?
"Bootable" is an adjective from the world of computing that describes something capable of starting up a computer. Most often it refers to storage media — a CD, DVD, external hard drive, or more commonly today, a USB flash drive — that has been prepared with the necessary system files so that when a computer starts, the operating system or utility software on that medium loads automatically. A bootable USB drive is the standard tool for installing or repairing an operating system, running diagnostic tools, or rescuing a machine whose main drive has failed. The word derives from "boot," itself a shortened form of "bootstrap," the old computing metaphor of pulling oneself up by one's bootstraps. While firmly technical in register, appearing mainly in manuals, tutorials, and support forums, it is widely understood by anyone who maintains their own computer. Its opposite, "non-bootable," describes media that cannot start a system.
adjectiveAble to be booted; (of a storage medium or device) containing the system files needed to start a computer and load its operating system.
- (of a computer) able to be started up.
- (of a storage medium such as a CD, DVD, or USB drive) containing an operating system or other software that a computer can load directly at startup.
"She created a bootable USB drive so she could reinstall the operating system on her laptop."
"The technician inserted a bootable recovery disc to repair the corrupted hard drive."
"Make sure the installation media is bootable before restarting your computer."
Every rescue mission for a crashed computer begins with one small thing: a bootable drive — a tiny USB stick that can bring an entire machine back to life.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of bootable
The word combines "boot" with the adjectival suffix "-able." "Boot" as a verb meaning to start a computer arose in mid-20th-century American computing jargon as a shortening of "bootstrap loader" — a program that loads a larger operating system, named after the idiom "to pull oneself up by one's bootstraps." The derived adjective "bootable" emerged alongside personal computing in the late 20th century as removable media became a common way to install and repair systems.
How bootable is actually used
"Bootable" is a technical term used almost exclusively in computing contexts. It is standard in both British and American English, though it appears far more often in manuals, forums, and documentation than in everyday speech.
Easily confused with bootable
"Rebootable" describes something that can be restarted after shutdown or failure, while "bootable" describes a disk, drive, or device capable of starting a computer from scratch.