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Unlike the legacy PC BIOS, UEFI does not rely on boot sectors, defining instead a boot manager as part of the UEFI specification. When a computer is powered on, the boot manager checks the boot configuration and, based on its settings, then executes the specified OS boot loader or operating system kernel (usually boot loader [62]).
HWiNFO (also known as HWiNFO64 [1]) is a system monitoring, system profiling and system diagnostics program for Windows and DOS-based systems. [ 2 ] It is developed by Martin Malik and REALiX. It was used by NASA during several tests of different microprocessors, including an AMD Ryzen 3 1200 and Intel i5-6600K .
Typical POST screen (AMI BIOS) Typical UEFI-compliant BIOS POST screen (Phoenix Technologies BIOS) Summary screen after POST and before booting an operating system (AMI BIOS) A power-on self-test (POST) is a process performed by firmware or software routines immediately after a computer or other digital electronic device is powered on. [1]
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A diagnostic program (also known as a test mode) is an automatic computer program sequence that determines the operational status within the software, hardware, or any combination thereof in a component, a system, or a network of systems. Diagnostic programs ideally provide the user with guidance regarding any issues or problems found during ...
The AMIDiag suite was introduced in 1991 and made available for MS-DOS, Microsoft Windows and UEFI platforms. [13] It includes both the Windows and DOS PC diagnostics programs. Later versions of AMIDiag support UEFI, which allows diagnostics to be performed directly on the hardware components, without having to use operating system drivers or ...
Early IBM PCs had a routine in the POST that would download a program into RAM through the keyboard port and run it. [26] [27] This feature was intended for factory test or diagnostic purposes. After the motherboard BIOS completes its POST, most BIOS versions search for option ROM modules, also called BIOS extension ROMs, and execute them.
UEFITool is a software program for reading and modifying EEPROM images with UEFI firmware. [1] It is written in C++ using the Qt library. [2] Features include the ability to view the flash regions and to extract and import them. [3] UEFITool allows the user to search for hex and text patterns. [4] UEFITool presents UEFI firmware images in a ...