System calls are used whenever a program needs to access a restricted resource, eg a file on the hard disk, any hardware device, or when it needs to print or draw to the screen
The software needed to run a computer is known as the Operating System. Many hardware platforms allow you to choose between multiple operating systems to suit your needs.
factors of operating system design
There is no uninstaller for an operating system. To remove an OS, simply format the partition that holds the operating system. If you use a boot manager to choose between different operating systems the software should automatically detect missing operating systems for you.
what are the objective of operating system
Because of some major problem.The most common one's of which are:Improper power supplyCorrupted Operating System FilesMalware Infection
when it is needed
Operating system CD
Both are software, operating system is software that will make your computer boot up and run. while Application software is a program that will run on a functional operating system.
when a process or anything makes a system call ,it goes in kernel(operating system).
A "System call" you be a function accessible from a programming language to the base hardware of the computer (eg to get the time).
System calls provide an interface between the process an the operating system. System calls allow user-level processes to request some services from the operating system which process itself is not allowed to d
d
System Software is the information needed to run the system. like config files and your O.S. (operating system).
No there isn't. You can still access the Command Line through the various Windows operating systems, if there is anything needed to be done that way.
Shell Programs
Service packs.
All of the information needed to keep track of a process when switching is kept in a data package called process control block.s A PCB is a data structure in the operating system kernel containing the information needed to manage a particular process. The PCB is the manifestation of a process in an operating system,