0
How could a system be designed to allow a choice of operating system to boot from. what would the bootstrap program need to do?
Wiki User
∙ 12y ago
On most computer systems, a small piece of code known as the bootstrap program or bootstrap loader locates the kernel loads it into main memory and startsits execution. Some computer systems, such as PCs, use a two-step process in which a simple bootstrap loader fetches a more complex boot program from disk, which in turn loads the kernel. The bootstrap program can perform a variety of tasks. Usually, one task is to run diagnostics to determine with the booting steps. It can also initialize all aspects of the system, from CPU registers to device controllers and the contents of main memory. Sooner or later, it starts the operating system.
Wiki User
∙ 12y ago
Anonymous
Consider a system that would like to run both Windows 7 and two
different distributions of Linux (e.g., Ubuntu, and Gentoo). Each
operating system will be stored on disk. During system boot-up, a
special program (boot manager) will determine which operating
system to boot into.
Anonymous
Add your answer:
Earn +20 pts
How does one go about disabling avg alone?
It depends on your operating system. If you go into the program and then look at options you should see the choice to temporarily disable. I don't use avg I'd suggest something different.
What factors affect the choice of operating systems?
Reliability, security, cost, performance, and compatibility.
What about multiprogramming?
Multiprogramming is a rudimentary form of parallel processing in which several programs are run at the same time on a uniprocessor. Since there is only one processor, there can be no true simultaneous execution of different programs. Instead, the operating system executes part of one program, then part of another, and so on. To the user it appears that all programs are executing at the same time. If the machine has the capability of causing an interrupt after a specified time interval, then the operating system will execute each program for a given length of time, regain control, and then execute another program for a given length of time, and so on. In the absence of this mechanism, the operating system has no choice but to begin to execute a program with the expectation, but not the certainty, that the program will eventually return control to the operating system. If the machine has the capability of protecting memory, then a bug in one program is less likely to interfere with the execution of other programs. In a system without memory protection, one program can change the contents of storage assigned to other programs or even the storage assigned to the operating system. The resulting system crashes are not only disruptive, they may be very difficult to debug since it may not be obvious which of several programs is at fault.
Can a computer be installed multiple operating system?
Yes!On a hard disk of a computer multiple operating system can be installed and run.... Example is Ubantu and Windows Xp on a single computerAfter the installation of multiple operating systems your computer will ask you to select a operating system of your choice....
How could a system be be designed to allow a choice of operating from which to boot?
You have to have either two or more hard drives and set one to MASTER and the other to SLAVE then configure them in the BIOS. Or you can have one hard drive with two or more partitions (each OS on its own partition) and configure them in your BIOS. I know that vista and windows 7 will automatically give you the choice on which one you want to boot to when the OS's are on the same hard drive. You might want to look into a virtual machine aswell, like virtualbox. They are pretty cool allowing you to run as many operating systems as you want at the same time.
Why do you need to use bootstrap What is the advantage and disadvantage of using bootstrap?
Without a bootstrap it would be impossible to boot a computer system but that's not really an advantage, it's a fundamental aspect of any computer system. The term "bootstrap" derives from the phrase: "to lift oneself up by one's own bootstraps". This is clearly an impossibility, not unlike standing in a carrier bag and then trying to lift the bag with you still in it; it can't be done. However, as we'll see, it is an apt phrase when it comes to initialising a computer system and provides the origin of terminology such as "boot process" and "bootup". On any computer system, most software is loaded and executed by other software that has previously been loaded and executed. For instance, the BIOS (Basic Input/Output System) performs some essential checks upon the system hardware before loading and executing the boot loader which loads and executes a chosen (or default) operating system, at which point the user can logon and subsequently load and execute their own choice of programs. But given that we require a program or operating system in order to load and execute other programs, this presents us with a paradox during initial bootup. How does the very first program load and execute if there is no program present to load and execute it? The answer lies in the bootstrap. The bootstrap is a machine-code program that is permanently written to a read-only memory chip (ROM). Being read-only, the bootstrap cannot be changed other than by replacing the chip itself. Unlike programs stored in RAM (Random Access Memory), ROM programs do not require power to maintain state. Thus when power is restored to the system, the bootstrap is already in memory and can be executed automatically, at which point the bootstrap takes control of the system. Typically, a bootstrap will simply locate, load and execute the system's BIOS program which takes care of the POST (Power-On Self-Test) and prepares the system to load and execute the boot loader which takes care of the bulk of the boot process until the system is ready to load and execute an operating system, at which point the system has effectively lifted itself up by its own bootstraps.
How does one go about disabling avg alone?
It depends on your operating system. If you go into the program and then look at options you should see the choice to temporarily disable. I don't use avg I'd suggest something different.
How is President choice credit card designed?
President's choice credit card refers to a banking service provided by Loblaw companies. It is designed to provide individual financial services under the Presidential's choice financial umbrella.
Which Windows operating system was specifically designed with network operating system program code?
Windows Server 2003 was specifically designed with network operating system program code. It was the first server operating system to support Active Directory, a directory service that simplifies network management. It also introduced the .NET Framework, which provides developers with a unified programming model for building web services and applications. Microsoft also released Windows Server 2008 which is the successor to Windows Server 2003 and is still supported by Microsoft. It is a popular choice for businesses as it is affordable and provides a rock solid platform for network operating systems. For those looking for the best deals on Windows Server 2003, Affordablekey is the best website to shop. They have a wide selection of operating systems and have been a best seller for years. During Ramadan Flash Sale, they offer up to 30% discount with coupon code: STPATS17. So don't miss this opportunity and get your Windows Server 2003 OS now.
Do store bought hard drives already have an operating system?
The short answer is no they do not. It is up to the individual to install the operating system of their choice.
Which is better, Bootstrap or .NET framework?
Bootstrap and .NET Framework are two different technologies that serve different purposes. Bootstrap is a front-end framework that helps to build responsive and visually appealing web applications, while .NET Framework is a server-side framework for building enterprise-grade web applications with a focus on security and scalability. Comparing them would be like comparing apples and oranges, as they are not interchangeable. The choice of which one to use depends on the specific requirements of the project. A developer may choose to use Bootstrap to create the user interface and .NET Framework to handle server-side functionality and data management.
Do you program a raspberry pi on itself or on a PC?
Once the RPi's Operating System of choice is up and running, it can be programmed like any other computer. Python is a popular programming language for use on the RPi (amongst others).
What is the best operating system for an omnibook xe3?
Windows XP is the best choice.
What operating systems is the ideal choice for artists and multimedia developers?
Mac OS
Is the summit program a good choice?
ya i enjoy it
What assists low-income elderly and disabled persons to afford modest housing of their choosing?
The Section 8 Housing Choice Voucher program is a federal assistance program that helps low-income elderly and disabled individuals afford housing of their choice by subsidizing a portion of their rent. This program allows participants to find housing in the private market that meets their needs. Additionally, some non-profit organizations and local government agencies also provide housing assistance programs specifically designed for these populations.
Who designed miley cyrus's dress at teen choice awards?
moschino
