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Power-on self-test. 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] POST processes may set the initial state of the device from firmware and detect if any hardware components are non-functional.
Inquisitor is a software suite used for hardware diagnostics, stress testing, certification and benchmarking platform. It is available in three formats: Standalone – As a package to be installed into existing Linux installation; such practice is somewhat limited in available tests. Live – Distributed as a Linux live CD distribution; system ...
dmesg output piped through grep. Operating system. Unix-like. Platform. Cross-platform. Type. Command. dmesg (diagnostic messages[1]) is a command on most Unix-like operating systems that prints the message buffer of the kernel. [2][3] The output includes messages produced by the device drivers.
A built-in self-test (BIST) or built-in test (BIT) is a mechanism that permits a machine to test itself. Engineers design BISTs to meet requirements such as: or constraints such as: The main purpose [1] of BIST is to reduce the complexity, and thereby decrease the cost and reduce reliance upon external (pattern-programmed) test equipment.
MemTest86(+) is designed to run as a stand-alone, self-contained program from a bootable USB flash drive, CD-ROM, floppy disk, or from a suitable boot manager without an operating system present. [24] This is because the program must directly control the hardware being tested and leave as much of the RAM space as possible for examination.
A drive that implements S.M.A.R.T. may optionally implement a number of self-test or maintenance routines, and the results of the tests are kept in the self-test log. The self-test routines may be used to detect any unreadable sectors on the disk, so that they may be restored from back-up sources (for example, from other disks in a RAID ).
A MAC address (short for medium access control address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth. Within the Open Systems Interconnection ...
The Macintosh startup chime is played on power-up, before trying to boot an operating system. The sound indicates that diagnostic tests were run immediately at startup and have found no hardware or fundamental software problems. [4] The specific sound differs depending on the ROM, which greatly varies depending on Macintosh model.