Legacy startup refers to using the BIOS (Basic Input Output System) to start the computer. Legacy boot is the "old school" boot method for many current hardware and software, and has been replaced by UEFI (Unified Extensible Firmware Interface).
Legacy startup refers to using the BIOS (Basic Input Output System) to start the computer. BIOS is the firmware used to provide runtime services to the operating system and programs and to perform hardware initialization during the boot process (boot).
Legacy boot mode contains a series of installed devices that are initialized when the computer performs a POST (power-on self-test) test during the boot process. Traditional boot will check the master boot record (MBR) of all connected devices, usually located on the first sector of the disk. When it cannot find a bootloader in a device, Legacy switches to the next device in the list and keeps repeating this process until it finds a bootloader, otherwise it returns an error.
In addition, Legacy boot is the "old school" boot method for many current hardware and software and has been replaced by UEFI (Unified Extensible Firmware Interface).
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