The BIOS (Basic Input/Output System) in a Microsoft Windows computer is a boot firmware, which provides all of the boot information to computer processor for proper booting of your system. In the first physical sector of BIOS, MBR (Master Boot Record) is stored. MBR loads the first sector of your boot media, either hard drive or floppy. After successfully loading first sector, BIOS examines last two bytes of the boot sector (that is 55AA). The 55AA is known as boot signature and work like an EOF (End Of File) when the process reads the sector.
Damaged or missing (due to operating system malfunction, software errors and improper system shutdown) boot record signature can cause severe issues. In such case, the data stored in the hard drive partition table gets damaged and your system becomes completely unbootable. In such situations, you can not access any of your hard drive partition and the partition loss situations occur. At this point, you are required to go for Partition Recovery solutions to recover lost, missing or inaccessible hard drive partitions.
In a practical scenario, the boot record signature may get damaged when BIOS boots the system. When boot record signature gets damaged or goes missing, you might come across any of the below given error messages:
“Boot Record Signature AA55 Not Found, xxyy Found” Or “Non-System or Non-Bootable Disk” Or “Strike f1 to retry boot” When these error messages occur, your system stops responding and it can not boot up. At this point, you need to find out the cause of partition loss and perform Partition Recovery by sorting out this issue.
Grounds of this issue This issue may occur due to damage to the key data structure of your computer system. That could be due to virus infection, software errors or improper system shutdown. Due to the same, BIOS can not read the boot disk and can not load operating system.
Resolution In order to recover lost partitions, you should opt for Partition Recovery Software. These tools are particularly designed to methodically scan entire hard drive and retrieve all of the lost partitions and stored data. Efficient scanning algorithms are used by these applications to achieve absolute recovery. With interactive and simple graphical user interface, these software are completely easy to use.
Stellar Phoenix Windows Data Recovery is the most excellent solution to recover lost hard drive partitions. It recovers all FAT32, VFAT, NTFS and NTFS5 file system partitions. This Partition Recovery Software is designed for Microsoft Windows 7 RC1, Vista, 2003, XP and 2000.