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Machine checks are a hardware problem, not a software problem. They are often the result of overclocking or overheating. In some cases, the CPU will shut itself off once passing a thermal limit to avoid permanent damage. But they can also be caused by bus errors introduced by other failing components, like memory or I/O devices.
The Intel-based MacBook Pro is a discontinued line of Macintosh notebook computers sold by Apple Inc. from 2006 to 2021. It was the higher-end model of the MacBook family, sitting above the low-end plastic MacBook and the ultra-portable MacBook Air, and was sold with 13-inch to 17-inch screens.
Unlike most Intel-based Macs that use EFI-based firmware, these Apple silicon-based Macs uses a boot ROM that loads the Low-Level Bootloader (LLB), similar to that of the firmware found in the iPhone and iPad. Like Intel-based Macs with a T2 security chip, the startup tones are absent.
An option ROM for the PC platform (i.e. the IBM PC and derived successor computer systems) is a piece of firmware that resides in ROM on an expansion card (or stored along with the main system BIOS), which gets executed to initialize the device and (optionally) add support for the device to the BIOS.
In the mid-1990s, a facility for supplying new microcode was initially referred to as the Pentium Pro BIOS Update Feature. [18] [19] It was intended that user-mode applications should make a BIOS interrupt call to supply a new "BIOS Update Data Block", which the BIOS would partially validate and save to nonvolatile BIOS memory; this could be supplied to the installed processors on next boot.
An alternate software system which usually resides in the computer's firmware, or a hardware-assisted debugger, is then executed with high privileges. It was first released with the Intel 386SL . [ 3 ] [ 4 ] While initially special SL versions were required for SMM, Intel incorporated SMM in its mainline 486 and Pentium processors in 1993.
Steve Guttenberg hit the ground running to help people impacted by the fires in Pacific Palisades — and he was almost unrecognizable. The flames first began around 10:30 a.m. local time on ...
Intel based Macs are incapable of running Mac OS 9 (or, indeed, any version of Mac OS X prior to Tiger), and on these machines EFI is used instead of Open Firmware, which both New World and Old World machines are based on. New World ROM Macs are the first Macs where direct usage of the Open Firmware (OF) subsystem is