startup disk

System launch drive

A startup disk is a storage device containing an operating system that a computer can boot from.

Most computers use their internal hard drive as the startup disk, but external drives, USB drives, or optical discs can serve the same purpose: Hold down Option to select a different startup disk.

The term appears most often in Mac contexts.

Related

partition · recovery · system restore · BIOS · operating system · install · format · erase · clone · clean install · restore · volume · macOS · boot camp · startup sound · safe mode · Windows · USB

Categories
Opposites
storage role

startup diskexternal storage

Data saved outside computer

backup drive · external hard drive · USB flash drive · storage drive · network drive

Family

start, disk, starts, started, starting, starter, starters, restart, restarts

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Used worldwide · Concrete · Rated G