How to fix Microsoft® Windows® 7 Master Boot Record (MBR)?
What is Master Boot Record in Windows 7? What are the common problems that occur with Master Boot Record?
Windows 7 was intended to be a more focused, incremental upgrade to the Windows line with the goal of being compatible with almost all applications and hardware. Windows 7 is available in six different editions. The commonly used editions of Windows 7 are Windows 7 Home Premium, Windows 7 Professional and Windows 7 Ultimate editions. Windows 7 is better to use on personal computers including laptop, home and business desktop, net book, tablet PC, and media center PC. Windows 7 Operating System has a Master Boot Record that tells the Operating System how to boot up the computer when the machine is turned on.
Following details explain about Master Boot Record in Windows 7, common problems that occur with Master Boot Record and different ways to fix the issues.
- Master Boot Record
- Common issues
- Tips to fix issues
Master Boot Record
Master Boot Record is also known as the partition sector. MBR is the first 512 byte boot sector of a partitioned hard disk. Any problem with the MBR directly affects the booting process of a hard disk thus making it inaccessible. MBR is the first program that is accessed when the computer system is started, as the MBR contains the critical boot information such as how many partitions are there and which partition is the active partition. The corruption in MBR can happen due to virus infections, human errors and abrupt system shutdown.
If the MBR in the Windows 7 Operating System is damaged, it means that your BIOS can not identify the Operating System and then it will give a message like "error loading operating system" or "invalid disk partition table" or "missing operating system". The MBR is located in front of the first partition on the main boot record area. Sometimes first sector of the partition gets corrupted. This is due to various reasons such as power fluctuations, virus infections, damaged Operating System etc.
To fix damaged Master Boot Record, insert the Windows 7 setup CD in CDROM drive and restart your PC. The computer detects your inserted Windows 7 CD and press the 'Spacebar' on your keyboard to boot into the CD. Then select the 'Repair your computer option' and click the 'Next' button. Select the Operating System that you need to repair. Click 'Next', select 'Command prompt' from the list of options and type ‘Bootrec’. Then it will automatically complete the process and you will receive a success message.