fixboot utility updates the bootsector code of a desired partition. The command is only available inside the Windows Recovery Console.


fixboot {DriveLetter:}


fixboot utility is the Windows 2000 and XP tool used to update the partition bootsector code which is responsible for loading and running a NTLDR bootloader.

The options are as follows:

Updates the partition bootsector code of the partition specified with the drive letter. It doesn’t update the bootsector code if volume with a specified letter doesn’t exist or if a volume with a specified letter isn’t connected to a primary disk partition.

Exit Status

The fixboot utility exits 0 on success and 1 if an error occurs.


Update the partition bootsector of a drive labeled C:

fixboot C:


fixboot utility is compatible with Windows XP and Windows 2000 as well as Microsoft Server 2003.


fixboot utility was superseded by bootrec.exe /mbr in Windows Vista.

See Also

fixmbr – utility used to update the master bootsector (MBR).

bootrec –  Windows Vista equivalent of the fixboot utility.