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On smartphones, tablets, and other devices, an over-the-air update is a firmware or operating system update that is downloaded by the device over the internet. Previously, users had to connect these devices to a computer over USB to perform an update. These updates may add features, patch security vulnerabilities, or fix software bugs.
On Apple Mac computers using Intel x86-64 processor architecture, the EFI system partition is initially left blank and unused for booting into macOS. [13] [14]However, the EFI system partition is used as a staging area for firmware updates [15] and for the Microsoft Windows bootloader for Mac computers configured to boot into a Windows partition using Boot Camp.
As originally used, firmware contrasted with hardware (the CPU itself) and software (normal instructions executing on a CPU). It was not composed of CPU machine instructions, but of lower-level microcode involved in the implementation of machine instructions. It existed on the boundary between hardware and software; thus the name firmware.
provide a user interface for system's configuration; construct whatever system environment is required by the target operating system; In early BIOSes, POST did not organize or select boot devices, it simply identified floppy or hard disks, which the system would always try to boot in that order.
UEFI requires the firmware and operating system loader (or kernel) to be size-matched; that is, a 64-bit UEFI firmware implementation can load only a 64-bit operating system (OS) boot loader or kernel (unless the CSM-based legacy boot is used) and the same applies to 32-bit.
If the user has enabled it, the system will also write an entry to the system event log. The log entry contains information about the bug check (including the bug check code and its parameters) as well as a link that will report the bug and provide the user with prescriptive suggestions if the cause of the check is definitive and well-known.
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
Lenovo Group Limited, trading as Lenovo (/ l ə ˈ n oʊ v oʊ / lə-NOH-voh, Chinese: 联想; pinyin: Liánxiǎng), is a Chinese-American [9] multinational technology company specializing in designing, manufacturing, and marketing consumer electronics, personal computers, software, servers, converged and hyperconverged infrastructure solutions, and related services. [5]
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