Boot order refers to the sequence in which a computer’s firmware attempts to load an operating system or other bootable software from various devices, such as a hard drive, optical drive, or network interface. It determines which device the computer will boot from when it is turned on or restarted.
Setting the correct boot order is crucial to ensure that the computer can successfully load and run an operating system. If the boot order is incorrect, the computer may not be able to find a bootable device and will fail to start up. Additionally, the boot order can be used to troubleshoot boot issues and to temporarily boot from a different device, such as a USB drive or recovery disc.