Booting
|
In computing, booting (also known as booting up) is the initial set of operations that a computer system performs when electrical power is switched on. The process begins when a computer that has been turned off is re-energized, and ends when the computer is ready to perform its normal operations. On modern general purpose computers, this can take tens of seconds and typically involves performing power-on self-test, locating and initializing peripheral devices, and then finding, loading and starting an operating system. Many computer systems also allow these operations to be initiated by a software command without cycling power, in what is known as a soft reboot, though some of the initial operations might be skipped on a soft reboot. A boot loader is a computer program that loads the main operating system or runtime environment for the computer after completion of self-tests. The computer term boot is short for bootstrap or bootstrap load and derives from the phrase to pull oneself up by one's bootstraps. The usage calls attention to the paradox that a computer cannot run without first loading software but some software must run before any software can be loaded. Early computers used a variety of ad-hoc methods to get a fragment of software into memory to solve this problem. The invention of integrated circuit Read-only memory (ROM) of various types solved the paradox by allowing computers to be shipped with a start up program that could not be erased, but growth in the size of ROM has allowed ever more elaborate start up procedures to be implemented. There are numerous examples of single and multi-stage boot sequences that begin with the execution of boot program(s) stored in boot ROMs. During the booting process, the binary code of an operating system or runtime environment may be loaded from nonvolatile secondary storage (such as a hard disk drive) into volatile, or random-access memory (RAM) and then executed. Some simpler embedded systems do not require a noticeable boot sequence to begin functioning and may simply run operational programs stored in read-only memory (ROM) when turned on. From Wikipedia under the
GNU Free Documentation License Verbbooting
From Wiktionary under the
GNU Free Documentation License |
Acer Aspire Enter Bios Answers (Bios Password, Password ... top user searches: "acer one bios backdoor passwords" ... "Minimal Taxes" [ ... Home: Acer Aspire Enter Bios: Answers www.minimaltaxes.com/acer_aspire_enter_bios/answers.htm Acer Aspire Wont Startup Answers - Minimal Taxes, Tax Exemption ... top user searches: "my aspire d255ewont start ... "Minimal Taxes" [ ... Home: Acer Aspire Wont Startup: Answers www.minimaltaxes.com/acer_aspire_wont_startup/answers.htm Beeping Noises Answers (Making Beeping Noises, Sound ... top user searches: "dell computer makes beeping" " ... "Minimal Taxes" [ ... Home: Beeping Noises: Answers www.minimaltaxes.com/beeping_noises/answers.htm Acer Aspire Reset Cmos Answers (Acer Aspire Cmos Battery ... Related 'Acer Aspire Reset Cmos' Searches: ... "Minimal Taxes" [ ... Home: Acer Aspire Reset Cmos: Answers www.minimaltaxes.com/acer_aspire_reset_cmos/answers.htm From Bing Site Search: "booting" Computers: Software: Diagnostics This category in other languages: Russian (4) #1-PC Diagnostics Company - Developer of PC diagnostics tools. #1-TuffTEST runs automatically or can be scripted. #1-TuffTEST ... Computers: Software: Operating Systems: x86 See also: Computers: Emulators: Intel x86 Architecture (67) Computers: Hardware: Components: Processors: x86 (16) Computers: Programming: Disassemblers: DOS and Windows (7) Computers: Software: Operating Systems: BIOS: This category treats software-oriented aspects of BIOSs. BIOS is an acronym for: Basic Input/Output System, of personal computers (PC). The BIOS is a chip inside a ...
|