Boot loaders

thumb|GNU GRUB, a popular free-software bootloader thumb|right|Windows Boot Manager thumb|rEFInd, a popular boot manager for EFI and [[UEFI systems]] A bootloader, also spelled as boot loader or called bootstrap loader, is a computer program that is responsible for booting a computer and booting an operating system. If it also provides an interactive menu with multiple boot choices then it is often called a boot manager.

Proprietary dual-boot wizard

NTLDR (abbreviation of NT loader) is the boot loader for all releases of Windows NT from 1993 with the release of Windows NT 3.1 up until Windows XP and Windows Server 2003. From Windows Vista onwards it is replaced by Windows Boot Manager (BOOTMGR).

boot loader used by modern version of Windows NT

boot loader developed by Apple Inc.

process of disabling secure booting to allow installation of custom firmware on a device

RedBoot (an acronym for Red Hat Embedded Debug and Bootstrap firmware) is an open-source application that uses the eCos real-time operating system Hardware Abstraction Layer to provide bootstrap firmware for embedded systems.

process of booting an Android device