Hold and wait
... Consider a system that would like to run both Windows XP and three different distributions of Linux (e.g., RedHat, Debian, and Mandrake). Each operating system will be stored on disk. During system boot-up, a special program (which we will call the boot manager) will determine which operating system ...
... Consider a system that would like to run both Windows XP and three different distributions of Linux (e.g., RedHat, Debian, and Mandrake). Each operating system will be stored on disk. During system boot-up, a special program (which we will call the boot manager) will determine which operating system ...
EuroDesign embedded technologies GmbH
... Our HyperBoot loader starts here: The system will be initialized for the scheduled configuration. This needs only a minimum of the time which the automatic recognition would require. Expressed in numbers: The pure initialization only takes between 0.030 and 0.1 seconds. The operating system then can ...
... Our HyperBoot loader starts here: The system will be initialized for the scheduled configuration. This needs only a minimum of the time which the automatic recognition would require. Expressed in numbers: The pure initialization only takes between 0.030 and 0.1 seconds. The operating system then can ...
Linux+ Guide to Linux Certification Chapter Nine System Initialization
... – Can be used to display a screen at boot time that prompts you to choose an operating system to boot – Similar to LILO and GRUB ...
... – Can be used to display a screen at boot time that prompts you to choose an operating system to boot – Similar to LILO and GRUB ...
Document
... computers and IBM developed the MVS, VM and other operating systems for their mainframe series of computers. Comp 1001: IT & Architecture - Joe Carthy ...
... computers and IBM developed the MVS, VM and other operating systems for their mainframe series of computers. Comp 1001: IT & Architecture - Joe Carthy ...
History of Operating Systems
... • On early systems programs directly controlled I/O devices using custom code (maybe shared in a library) • Eventually manufacturers made their I/O libraries available at run time as an I/O Control System • Part of main memory was set aside for the IOCS, the rest of memory was for users • This was t ...
... • On early systems programs directly controlled I/O devices using custom code (maybe shared in a library) • Eventually manufacturers made their I/O libraries available at run time as an I/O Control System • Part of main memory was set aside for the IOCS, the rest of memory was for users • This was t ...
History of Operating Systems
... • Eventually programs were coded onto paper tape using a paper tape machine with a keyboard • "load" button could read entire program from paper tape into memory ready to run • This was referred to as automatic programming – Some though it would spell the end for programmers ...
... • Eventually programs were coded onto paper tape using a paper tape machine with a keyboard • "load" button could read entire program from paper tape into memory ready to run • This was referred to as automatic programming – Some though it would spell the end for programmers ...
Chapter 1: Introduction to Computers
... o Disk defragmenter (Reorganizes files and unused space – programs can run faster) o Backup utility (Copy selected files or entire hard disk to another disk or tape) o Screen saver (Causes monitor's screen to display a moving image or blank screen if there is no activity for a specified time period) ...
... o Disk defragmenter (Reorganizes files and unused space – programs can run faster) o Backup utility (Copy selected files or entire hard disk to another disk or tape) o Screen saver (Causes monitor's screen to display a moving image or blank screen if there is no activity for a specified time period) ...
Low-level formatting or physical formatting
... bootstrap is stored in read-only memory (ROM). Advantages: 1. ROM needs no initialization. 2. It is at a fixed location that the processor can start executing when powered up or reset. 3. It cannot be infected by a computer virus. Since, ROM is read only. The full bootstrap program is stored in a pa ...
... bootstrap is stored in read-only memory (ROM). Advantages: 1. ROM needs no initialization. 2. It is at a fixed location that the processor can start executing when powered up or reset. 3. It cannot be infected by a computer virus. Since, ROM is read only. The full bootstrap program is stored in a pa ...
A+ Guide to Managing and Maintaining your PC, 6e
... • Some computers have a soft and hard power switch – Soft power switch shuts down and restarts Windows – Hard power switch cuts power and restarts machine • Dell power button, will soft boot if pressed. – Shut down machine if held for 5 sec. ...
... • Some computers have a soft and hard power switch – Soft power switch shuts down and restarts Windows – Hard power switch cuts power and restarts machine • Dell power button, will soft boot if pressed. – Shut down machine if held for 5 sec. ...
continued…
... • Uses OS to reboot Hard (cold) boot • Uses on/off switch • More stressful on the machine because of power surge ...
... • Uses OS to reboot Hard (cold) boot • Uses on/off switch • More stressful on the machine because of power surge ...
CS111—Operating System Principles
... The von Neumann Architecture Long, long, long ago (1940s), John von Neumann invented simple von Neumann computer architecture, which is the basis of modern computers. A von Neumann computer consists of a CPU, a memory unit, and I/O devices (e.g., storage devices such as disk drives or tapes). Progra ...
... The von Neumann Architecture Long, long, long ago (1940s), John von Neumann invented simple von Neumann computer architecture, which is the basis of modern computers. A von Neumann computer consists of a CPU, a memory unit, and I/O devices (e.g., storage devices such as disk drives or tapes). Progra ...
Windows XP Boot Process
... Power-On Self Test As soon as you turn on a computer, its central processing unit (CPU) begins to carry out the programming instructions contained in the basic input/output system (BIOS). The BIOS, which is a type of firmware, contains the processor-dependent code that starts the computer. The firs ...
... Power-On Self Test As soon as you turn on a computer, its central processing unit (CPU) begins to carry out the programming instructions contained in the basic input/output system (BIOS). The BIOS, which is a type of firmware, contains the processor-dependent code that starts the computer. The firs ...
A+ Guide to Managing and Maintaining your PC, 6e
... • Some computers have a soft and hard power switch – Soft power switch shuts down and restarts Windows – Hard power switch cuts power and restarts machine • Dell power button, will soft boot if pressed. – Shut down machine if held for 5 sec. ...
... • Some computers have a soft and hard power switch – Soft power switch shuts down and restarts Windows – Hard power switch cuts power and restarts machine • Dell power button, will soft boot if pressed. – Shut down machine if held for 5 sec. ...
Introduction - Purdue University
... computers were ideally suited: airline reservations. Just-intime inventory tracking, real-time data management, distributed enterprise systems? SABRE and American Airlines were there first. ...
... computers were ideally suited: airline reservations. Just-intime inventory tracking, real-time data management, distributed enterprise systems? SABRE and American Airlines were there first. ...
Best-Effort Multimedia Networking Outline
... adjust the user program state so that it calls its handler Execute an RTI instruction to return to the user program If user program did not have a specified handler, then OS kills it and runs some other user program, as available Key Fact: Effects of exceptions are visible to user programs and cause ...
... adjust the user program state so that it calls its handler Execute an RTI instruction to return to the user program If user program did not have a specified handler, then OS kills it and runs some other user program, as available Key Fact: Effects of exceptions are visible to user programs and cause ...
lect_1
... Boot Sector Reading: BIOS reads the disk sector where files are needed to start the operating system. The area of the disk where there files are located is called Boot Sector. Once these files are loaded in RAM , few more configuration files are also required which contains what to do upon the start ...
... Boot Sector Reading: BIOS reads the disk sector where files are needed to start the operating system. The area of the disk where there files are located is called Boot Sector. Once these files are loaded in RAM , few more configuration files are also required which contains what to do upon the start ...
PPT 02 - Mesa Community College
... Device drivers are little programs used to operate a particular device. The programs are provided by the manufactures. Device drivers must be installed after installing the new hardware, or the device will not work. Some common devices that require drivers are the mouse, keyboard, video display card ...
... Device drivers are little programs used to operate a particular device. The programs are provided by the manufactures. Device drivers must be installed after installing the new hardware, or the device will not work. Some common devices that require drivers are the mouse, keyboard, video display card ...
COS 318: Operating Systems Overview Prof. Margaret Martonosi Computer Science Department
... Allocate/deallocate by process creation (fork) and termination Names are relative to stack pointer and entirely local Linker and loader say the starting address Allocate/deallocate by library calls such as malloc() and free() Application program use the library calls to manage ...
... Allocate/deallocate by process creation (fork) and termination Names are relative to stack pointer and entirely local Linker and loader say the starting address Allocate/deallocate by library calls such as malloc() and free() Application program use the library calls to manage ...
WHAT IS THE DOS BOOT SEQUENCE??
... partition along with Ntdetect.com, boot.ini, bootsect.dos (for dual booting) and Ntbootdd.sys (needed with some SCSI adapters). 3. Ntdetect: Gets information about installed hardware. Ntldr then uses the ARC path specified in the boot.ini to find the boot partition. 4. Ntoskrnl.exe and Hal.dll. 5. N ...
... partition along with Ntdetect.com, boot.ini, bootsect.dos (for dual booting) and Ntbootdd.sys (needed with some SCSI adapters). 3. Ntdetect: Gets information about installed hardware. Ntldr then uses the ARC path specified in the boot.ini to find the boot partition. 4. Ntoskrnl.exe and Hal.dll. 5. N ...
Windows Vista Boot process
... order to load the operating system kernel (ntoskrnl.exe) and boot-class device drivers. ...
... order to load the operating system kernel (ntoskrnl.exe) and boot-class device drivers. ...
Linux Booting Procedure
... operating systems because of its task, which is the management of the system's resources and the communication between hardware and software components ...
... operating systems because of its task, which is the management of the system's resources and the communication between hardware and software components ...
Chapter 2: System Structures
... Another set of OS functions exists for ensuring the efficient operation of the system itself via resource sharing l Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them 4 Many types of resources - Some (such as CPU cycles, main ...
... Another set of OS functions exists for ensuring the efficient operation of the system itself via resource sharing l Resource allocation - When multiple users or multiple jobs running concurrently, resources must be allocated to each of them 4 Many types of resources - Some (such as CPU cycles, main ...
Intro. to Computer - web page for staff
... • Tasks include: • Load application for execution • Provide services (I/O services…) • Time sharing • Handle virtual memory • Maintain file system ...
... • Tasks include: • Load application for execution • Provide services (I/O services…) • Time sharing • Handle virtual memory • Maintain file system ...
Booting
In computing, booting (or booting up) is the initialization of a computerized system. The system can be a computer or a computer appliance. The booting process can be ""hard"", after electrical power to the CPU is switched from off to on (in order to diagnose particular hardware errors), or ""soft"", when those power-on self-tests (POST) can be avoided. Soft booting can be initiated by hardware such as a button press, or by software command. Booting is complete when the normal, operative, runtime environment is attained.A boot loader is a computer program that loads an operating system or some other system software for the computer after completion of the power-on self-tests; it is the loader for the operating system itself, which has its own loader for loading ordinary user programs and libraries. Within the hard reboot process, it runs after completion of the self-tests, then loads and runs the software. A boot loader is loaded into main memory from persistent memory, such as a hard disk drive or, in some older computers, from a medium such as punched cards, punched tape, or magnetic tape. The boot loader then loads and executes the processes that finalize the boot. Like POST processes, the boot loader code comes from a ""hard-wired"" and persistent location; if that location is too limited for some reason, that primary boot loader calls a second-stage boot loader or a secondary program loader.On modern general purpose computers, the boot up process can take tens of seconds, and typically involves performing a power-on self-test, locating and initializing peripheral devices, and then finding, loading and starting an operating system. The process of hibernating or sleeping does not involve booting. Minimally, some embedded systems do not require a noticeable boot sequence to begin functioning and when turned on may simply run operational programs that are stored in ROM. All computing systems are state machines, and a reboot may be the only method to return to a designated zero-state from an unintended, locked state.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 requirement that, if most software is loaded onto a computer by other software already running on the computer, some mechanism must exist to load the initial software onto the computer. Early computers used a variety of ad-hoc methods to get a small program into memory to solve this problem. The invention of read-only memory (ROM) of various types solved this paradox by allowing computers to be shipped with a start up program that could not be erased. Growth in the capacity of ROM has allowed ever more elaborate start up procedures to be implemented.