Fix boot sector of FAT16/FAT32/NTFS partitions

author icon

Daisy updated on Feb 19, 2021 to Computer Instruction | How-to Articles

The first sector of partition is also known as the Boot Sector. What the MBR is for the 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.

Possible (but not all) symptoms

Invalid media type reading drive
Abort, Retry, Fail?
File system is displayed as "RAW"
Windows may ask if you want to format the drive
File names contain "weird" characters
"Sector not found" messages

Recover lost files

If you want to recover files due to deletion, format, partition lost or damage, system crash, etc. especially under Windows Vista/2008/Windows 7, our free data recovery software - Data Recovery Wizard Free Edition is recommended. It works well with hardware RAID and hard drives, SD and Memory Cards, etc.

Step 1. Select a location and start scanning

Launch EaseUS Data Recovery Wizard, hover on the location where you lost data, then click "Scan".

select a location and click scan

Step 2. Preview and select the files

Wait until the scanning completes. You can use Filter or search bar to find lost files.

Choose files to recover

Step 3. Recover lost data

Then choose a location to save the recovered data, and click "OK". You should store the data in another place instead of the original one.

Recover lost data

Fix Boot Sector

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 choices:

"Auto" mode: Partition Table Doctor will automatically check and repair the Boot Sector of the partition. We recommend you choose this model.

If the "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!!!

Was This Page Helpful?