What the MBR is for entire drive, that the Boot Sector is the first sector of an individual partition, like the MBR, the Boot Sector contains information that the system needs to locate the materials that are needed to start the operating system. A corrupt or missing Boot Sector is a serious problem. Without it the partition can not be accessed.

If the Boot Sector of a FAT16/FAT32/NTFS partition was corrupt, it will be marked with "X" by Partition Table Doctor.

1. If you cannot access the FAT16/NTFS partition and the partition was marked with "X", right click the partition and choose Fixboot. Partition Table Doctor will automatically check and repair the Boot Sector of the partition.

2. If you cannot access the FAT32 partition and the partition was marked with "X", right click the partition and choose Fixboot. There are two choice:
  a. "Auto" mode
Partition Table Doctor will automatically check and repair the Boot Sector of the partition. We recommend you choose this mode.
  b. "Interactive" mode
If "Auto" mode doesn't work, you could choose "Interactive" mode. You must input the Label for the partition or file name (the file is in the Root Folder). If you do not know what file name to input, follow the file name that is suggested:
     Bootable partition
io.sys, msdos.sys, ntldr, bootlog.txt
     Other partitions
_restore, recycled
File name can not support long name or wildcard character by DOS version of Partition Table Doctor.

3. Browse
In both of the modes, Partition Table Doctor will provide you a preview of the folders and files in the root directory on this partition before "Yes" option being chosen to make the change valid on a dialogue box. If it appears the same as the previous one that means this function can fix it.

4. Save and reboot computer and you will find everything is just what it was, backup your files!

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Tags: Partition Table Doctor,Fixboot,PTD