Editing Old World ROM (section)

{{refimprove|date=December 2024}} 
[[Image:Oldworldromsym.png|thumb|Showing all three icons of the OldWorld ROM (from left to right: Missing OS, Happy Mac (Found OS), and Sad Mac (Macintosh 128k/Plus) logos)]]
'''Old World ROM''' computers are the [[Apple Macintosh|Macintosh]] (Mac) models that use a [[Macintosh Toolbox]] [[read-only memory]] (ROM) chip, usually in a socket (but soldered to the motherboard in some models). All Macs prior to the [[iMac]], the [[iBook]], the [[Power Macintosh G3 (Blue & White)|Blue and White Power Mac G3]] and the [[PowerBook G3#PowerBook G3 Series (Bronze Keyboard, Lombard)|Bronze Keyboard (Lombard) PowerBook G3]] use Old World ROM, while said models, as well as all subsequent models until the introduction of the [[Apple–Intel architecture|Intel-based models]] that use [[UEFI]], are [[New World ROM]] machines. In particular, the Beige Power Mac G3 and all other beige and platinum-colored Power Macs are Old World ROM machines. In common use, the "Old World" designation usually applies to the early generations of [[Peripheral Component Interconnect|PCI]]-based "beige" [[Power Macintosh|Power Macs]] (and sometimes the first [[NuBus]]-equipped models), but not the older [[Motorola 68000]]-based Macs; however, the Toolbox runs the same way on all three types of machines.<ref>{{Cite web |title=All Macintosh ROMs (68K + PPC) - Macintosh Repository |url=https://www.macintoshrepository.org/7038-all-macintosh-roms-68k-ppc- |access-date=2024-12-14 |website=www.macintoshrepository.org |language=en}}</ref>