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| D:\>bootsect /? 
 bootsect {/help|/nt60|/nt52} {SYS|ALL|<DriveLetter>:} [/force]
 
 Boot sector restoration tool
 
 Bootsect.exe updates the master boot code for hard disk partitions in order to
 switch between BOOTMGR and NTLDR.  You can use this tool to restore the boot
 sector on your computer.
 
 Run "bootsect /help" for detailed usage instructions.
 
 D:\>
 
 
 
 D:\>bootsect /help
 
 bootsect {/help|/nt60|/nt52} {SYS|ALL|<DriveLetter>:} [/force]
 
 Boot sector restoration tool
 
 Bootsect.exe updates the master boot code for hard disk partitions in order to
 switch between BOOTMGR and NTLDR.  You can use this tool to restore the boot
 sector on your computer.
 
 /help   Displays these usage instructions.
 
 /nt52   Applies the master boot code that is compatible with NTLDR to SYS,
 ALL, or <DriveLetter>.  The operating system installed on SYS, ALL, or
 <DriveLetter> must be older than Windows Vista.
 
 /nt60   Applies the master boot code that is compatible with BOOTMGR to SYS,
 ALL, or <DriveLetter>.  The operating system installed on SYS, ALL, or
 <DriveLetter> must be Windows Vista or WindowsServer "Longhorn".
 
 SYS     Updates the master boot code on the system partition used to boot
 Windows.
 
 ALL     Updates the master boot code on all partitions.  ALL does not
 necessarily update the boot code for each volume.  Instead, this
 option updates the boot code on volumes that could be used as Windows
 boot volumes, which excludes any dynamic volumes that are not
 connected with an underlying disk partition.  This restriction is
 present because boot code must be located at the beginning of a disk
 partition.
 
 <DriveLetter> Updates the master boot code on the volume associated with this
 drive letter.  Boot code will not be updated if either 1)
 <DriveLetter> is not associated with a volume or 2) <DriveLetter> is
 associated with a volume not connected to an underlying disk
 partition.
 
 /force  Forcibly dismounts the volume(s) during the boot code update.  You
 should use this option with caution.
 
 If Bootsect.exe cannot gain exclusive volume access then the file
 system may overwrite the boot code before the next reboot.
 Bootsect.exe always attempts to lock and dismount the volume before
 each update.  When /force is specified, a forced dismount is attempted
 if the initial lock attempt fails.  A lock can fail, for example, if
 files on the target volume are currently opened by other programs.
 
 When successful, a forced dismount allows exclusive volume access and
 a reliable boot code update even though the initial lock failed.  At
 the same time, a forced dismount invalidates all open handles to files
 on the target volume.  This could result in unexpected behavior from
 the programs that opened these files.  Therefore, you should use this
 option with caution.
 
 Example:
 
 To apply the master boot code that is compatible with NTLDR to the volume
 labeled E:, use the following command:
 
 bootsect /nt52 E:
 
 D:\>
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