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Operating Systems
Operating systems, both proprietary and open-source, include those produced by Microsoft, Linux, and Apple Mac
4,423 Questions
A computer boots up by first running a program in Read Only Memory (ROM) that is built into the computer's motherboard. This program is called the Power-On Self Test (POST) and Basic Input/Output System (BIOS). After checking the hardware, the program consults a nonvolatile parameter memory (called "PRAM" or "CMOS" for historical reasons) that acts like Flash memory in that it can be changed but retains its information without power. From this parameter memory, the program in ROM decides where to look for the next step.
Typically the next step is to read the first block ("boot block") off of the first hard drive into memory and run the program in it. Other options are to read the first block off the floppy, the CD-ROM, or from the network.
In the hard drive situation, the program in the boot block figures out which disk partition is the active partition, loads the boot block from that partition into memory, and runs that program. This allows you to have different operating systems on different partitions and choose which one to run by changing active partitions.
The second boot block program loads a more elaborate loader program from the disk, which in turn loads the operating system (finally!).
Most PCs have a "BIOS screen" that you can get to by a key sequence (F1 or ESC) during the boot process. This BIOS screen allows you to change the nonvolatile parameter memory; however, it is possible to make changes that will keep your computer from booting, so be careful. For example, bad values in "RAM Timings" will cause serious problems.
How operating systems manages hardware?
OS's manage hardware by creating a uniform set of functions or operations that can be performed on various classes of devices (for instance read x bytes at address y from hard drive of any type).
These general functions rely on a layer of drivers that provide specific means to carry out operations on specific hardware. Drivers are usually provided by the manufacturers, but the OS must provide a way to load and use drivers, as well as detect the device and select an appropriate driver if several are available.
What is the operating system called?
There is no "the" operating system.
There are LOTS of different ones available.
Windows XP, Windows Vista
Linux
Mac OSX
and much more... There is no "the" operating system.
There are LOTS of different ones available.
Windows XP, Windows Vista
Linux
Mac OSX
and much more...
What are the three computer operating systems?
Windows, Linux, Mac OSX are currently the three most popular computer operating systems. Other operating systems are Solaris, BeOS, Google Chromium os, and many more.
What part of software allow the operating system to communicate with peripheral devices?
The device drivers allow the operating system to communicate with peripheral devices.
What is desktop operating system?
What are the function of operating system in ubuntu?
Ubuntu is an operating system and it has all typical functions: resource allocation, filesystem and storage management, handling of input and output operations, communication between applications and the hardware.
How operating system of a personal computer comes into working order?
A PC going through its booting sequence upon staring, a personal computer's CPU runs the instruction located at the memory location of the Basic Input/ Output System (BIOS). It contains a jump instruction that transfer execution to the location of the BIOS startup program. This program runs a Power On Self Test to check that devices the computer rely on are functioning; it also initializes these devices.
Then the BIOS go through a preconfigured list of devices until it finds one that is bootable. If the BIOS find a bootable device, it loads and executes its boot sector. In the case of a hard drive, this is referred to as the master boot record (MBR) and is often not operating system specific. Usually MBR code checks the partition table for an active portion. If one is found, the MBR code loads that partition's boot sector and executes it. The boot sector is often operating system specific, however in most operating systems its main function is to load and execute the kernel, which continues startup and in the case of multi-user operating systems prompt the login screen.
How do you stop windows automatic updates?
Go to start-All programs and on the top you will find windows update.Open it and Click" change settings" and make changes like updating manually or as you like
What are process states in operating system?
To put it in simple terms, we write our computer programs in a text file and when we execute this program, it becomes a process which performs all the tasks mentioned in the program.
When a program is loaded into the memory and it becomes a process, it can be divided into four sections ─ stack, heap, text and data
Where can one find open source software?
Open-source software is found and hosted on a number of sites. Sourceforge.net is probably the most popular. GNU Savannah is another. Google Code is a fairly recent alternative that also hosts only free software.
How do you refresh BIOS of a system?
Reinitialising the BIOS
As BIOS setup is used to edit hardware settings, changing them might cause the system to become unstable, and it might not even restart. When this happens, the changes to the BIOSmust be cancelled, and the default settings must be restored.
If the computer boots up and you can access the BIOS, it will usually allow you to return to the default settings. In PhoenixBIOS, press F9 to return the configuration to the defaults set by the manufacturer. In AwardBIOS, press F9 to restore the previous settings, F6 to restore Award BIOS's default settings, and F7 to restore the defaults set by the motherboard's manufacturer.
If you cannot access the BIOS using standard procedures, most motherboards include a jumper for resetting the default values. Simply change the jumper's position, then leave it there for about ten seconds.
When companies operating at different but related levels of an industry merge it is known as an?
vertical merge
What is a temporary holding area for data application program instructions and the operating system?
I think the answer you're looking for is disk storage... But I'm not positive!
What is General characteristics of optimal operating system?
What exactly do you mean by 'optimal operating system'? If you don't define the term there is no way to answer the question.
Operating system that is reliable and high performing?
OS that is reliable is Linux coz it don't play .exe files in it which are generally virus(some times not most) which affects system generally.even the MNC are turning up to this OS for security and some other purpose like open source.I am NT much aware of its performance
What is operating system. Explain the functions of operating system?
The OS, Operating system, controls everything that is software and major hardware based. From applications to handling inputs and running the hardware in a correct manner.
How does a septic system operate?
Everything from toilet or kitchen sink to laundry washing machine discharge into sewer line than exit the house , from there go into whats called the holding tank there everything rest and settle, the heavy stuff to the bottom of tank and the liquids to the top , from there ones the liquids reach a certain height in the holding tank, liquids will go out of another opening located at a lower level from the coming appeased side coming from the house and will send it by gravity through soled pipe to what is called the leaching system , witch is pipes with halls on one half side through out the length , and they are lade under ground and away from an active area and the holding tank ,with the halls facing down , where already gravel have bean lade down to allow fluids to come out of the pipe halls and be absorbed by the leach field ,
Leaching system size i depends on the size of the house and amount of bedrooms ,
Back at the holding tank ones the heavy stuff gets too high it will give a bad smell and a slow drain problem , than its time to call MR. stinky's septic service . hope i gave you some idea how it works
S. SALMUS.
On what platforms can one play ''Heroes of Might and Magic 5''?
The entire series of "Heroes of Might and Magic" is intended to be played on the DOS and Windows platforms. However, there has also been some limited support for Mac and Linux operating systems.
API
WHAT ARE The Characteristics and Utilities of a Network Operating System?
Speed
Versatility
Reliability
Accuracy
Storage and retrieval
