Partition Boot Sector is the first sector in the partition table that contains vital information used by file system to access the partition. The Master Boot Record (MBR) uses partition boot sector to load the operating system kernel files. Partition boot sector corruption may occur due to MBR damage, zeroing the partition boot sector, malicious software like virus etc. Once the partition boot sector gets corrupted or damaged, the hard drive partition becomes inaccessible. In such situations, you need to restore data from an updated backup. However, if you have not created any backup or it is not up-to-date, you should use advanced partition recovery software.

Consider a practical scenario, where you encounter the below error message when you attempt to boot from a partition:

“Non System Disk”

After the above error message appears, the partition becomes unmountable. In addition, you encounter the same error message each time you try to boot from the partition.

Cause:

The above error message mainly appears when the partition boot sector gets damaged or corrupted.

Resolution:

To resolve the above error message and boot from the partition, you should follow these steps:

•You can restore the backup of whole disk or MBR/Boot Sectors from the drive. NTFS (New Technology File System) maintains a duplicate copy of the boot sector, which is located on the disk.

•If a backup unavailable (in case of NTFS), you can try to locate a replacement of Partition Boot Sector.

•Furthermore, if the replacement boot sector is also unavailable, then only virtual partition recovery can be done.

However, if all the above measures fail to enable the system so that it can boot from the partition, the only option left is to go for a clean reinstall of the operating system. A clean reinstall erases all the data from the selected partition. In such data loss situations, you should use advanced Partition Recovery applications. Such recovery applications systematically recover and restore all the lost files and folders by using effective scanning methods. You can easily understand these tools with their user-friendly interface and no sound technical skills are required to use them.

Stellar Phoenix Windows Data Recovery is the most powerful partition recovery Software. It provides complete recovery and restoration of lost files and folders from lost, deleted, corrupted and formatted hard drive partitions and volumes. This read-only Partition Recovery tool is compatible with Windows Vista, XP, 2003 and 2000.