Editing Booting (section)

=== First-stage boot loaders ===
Examples of first-stage (hardware initialization stage) boot loaders include BIOS, UEFI, [[coreboot]], [[Libreboot]] and [[Das U-Boot]]. On the IBM PC, the boot loader in the [[Master Boot Record]] (MBR) and the [[Partition Boot Record]] (PBR) was coded to require at least 32&nbsp;KB<ref name="Paul_1997_OD-A3"/><ref name="msakamoto-mbr">{{cite web |author-first=Masahiko |author-last=Sakamoto |title=Why BIOS loads MBR into 7C00h in x86? |date=2010-05-13 |url=http://www.glamenv-septzen.net/en/view/6 |website=Glamenv-Septzen.net |access-date=2012-08-22 |archive-date=2017-08-24 |archive-url=https://web.archive.org/web/20170824002951/https://www.glamenv-septzen.net/en/view/6 |url-status=live}}</ref> (later expanded to 64&nbsp;KB<ref name="BBS_101">{{cite web |author1=Compaq Computer Corporation |author2=Phoenix Technologies Ltd |author3=Intel Corporation |date=1996-01-11 |title=BIOS Boot Specification 1.01 |url=https://acpica.org/sites/acpica/files/specsbbs101.pdf |archive-url=https://ghostarchive.org/archive/20221009/https://acpica.org/sites/acpica/files/specsbbs101.pdf |archive-date=2022-10-09 |url-status=live |access-date=2017-12-21}}</ref>) of system memory and only use instructions supported by the original [[8088]]/[[8086]] processors.