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MAR-memory address register used stored the address of the memory loaction

MBR- memory buffer register is the actully data.

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How does a computer BIOS find the MBR?

A computer's BIOS (Basic Input/Output System) is the heart of most modern personal computers. It is the part of the system that executes when a computer is first turned on, before any other programs or software are run. It ensures that the computer is set up correctly and is able to run properly, at least until subsequent programs and software are run. One such set up is the MBR (Master Boot Record), which is on the primary system device, commonly, but not always, a hard disk. Once the BIOS determines where the primary system device is located, it then uses that device's information to locate the area where the MBR resides (also referred to as the "boot sector"), examines it for errors, computer viruses, etc, and then allows the MBR to run; on most systems, this will initiate the computer's operating system, which is the part most commonly seen and familiar to that computer's user.


What happens when MBR fails?

When MBR fails then the operating system will not load.


What is the function of mbr?

Well, assuming you mean "Master Boot Record". The master boot record is a 512 byte strip of data on a disk which contains, along with a few other things, the partition table for the disk in question and the bootstrap info for the operating system AND the disk identification. The last one is not always used. The MBR is very important.


What takes control of the boot process from the system bios?

The MBR takes control of the boot process from the sytem bios.


What is the pre-boot sequence?

Preboot Sequence During startup, a Windows Server 2003-based computer initializes the boot portion of the hard disk and the preboot sequence begins. This sequence consists of four steps: • The computer runs power-on self test (POST) process to determine the amount of physical memory; and • The hardware components are present. • If the computer has a Plug and Play (BIOS), enumeration and configuration of hardware devices occurs. • The computer BIOS locates the boot device and loads and runs the master boot record (MBR). Note: Windows Server 2003 modifies the boot sector during installation so that Ntldr loads during system startup. Therefore you should disable the Boot Sector Virus Protection in your BIOS Setup.

Related Questions

What is the sequence of micro operation of an interrupts and interrupts return cycle?

Mbr<-pc mar<-x pc<-y memory<-mbr


What is a full form MBR?

Full form of MBR is Master Boot Record in computer hardware field...


When a windows xp computer has completed the post for each adapter card that has a bios what is the next step after the sequence?

BIOS reads the MBR.


What does MBR mean when EIN is issued?

I our company's case I understood it to mean "member". I was the contact person for our Limited Loss Company, and MBR was inserted after my name in the official EIN document. Furthermore, an IRS document found in the internet has this: "A single member or sole member LLC account will contain the words "SOLE MBR" or "SINGLE MBR" within the Sort Name line as shown on CC INOLES" So: MBR = member.


Where mbr located in the disk?

The Master Boot Record (MBR) is stored at the beginning of your hard drive (in the first 512 bytes.) The MBR contains information about the beginning and ending of each partition, which partition contains the operating system for booting, and other valuable information about the disk layout. Your computer will not boot up if your MBR is corrupt or missing.


What default partition style used by Windows 7 on an x86 computer is?

MBR - Master Boot Record


How does a computer BIOS find the MBR?

A computer's BIOS (Basic Input/Output System) is the heart of most modern personal computers. It is the part of the system that executes when a computer is first turned on, before any other programs or software are run. It ensures that the computer is set up correctly and is able to run properly, at least until subsequent programs and software are run. One such set up is the MBR (Master Boot Record), which is on the primary system device, commonly, but not always, a hard disk. Once the BIOS determines where the primary system device is located, it then uses that device's information to locate the area where the MBR resides (also referred to as the "boot sector"), examines it for errors, computer viruses, etc, and then allows the MBR to run; on most systems, this will initiate the computer's operating system, which is the part most commonly seen and familiar to that computer's user.


What happens when MBR fails?

When MBR fails then the operating system will not load.


Which of th efollowing symptoms might indicate that the mbr record is damaged?

The most common is when the sector signature is damaged or removed, which results in the infamous error message "Operating system not found." If the first sector is damaged, then you will just get a black screen on boot. The Master Boot Record (MBR) will only execute on boot. It is normal for a computer to function fine if its MBR is edited while the computer is active. Be very careful! A damaged MBR can be fatal to the contents of your hard disk drive (HDD); recovery may not be possible.


What contains the program necessary for the computer to start up and a description of how the hard drive is organized?

MBR ( Master Boot Records)


What permenantly stores the set of instructions that the computer uses to activate software that controls the processing function when you turn on the computer?

The instructions are stored in the Master Boot Record (MBR).


When a windows computer has completed the post for each adapter card that has a bios what is the next step during the boot sequence?

BIOS reads the MBR.