$ npm install blockdevice

• example/mbr.js: Reading the Master Boot Record of a device

• options: Object
  • fs: require( 'fs' ), optional; custom 'fs' instance
  • fd: Number, optional; file descriptor
  • path: String, optional if fd is given
  • mode: String, optional if fd is given
  • blockSize: Number, optional
  • size: Number, optional
  • headsPerTrack: Number, optional
  • sectorsPerTrack: Number, optional

• id: Number

• callback: function( err, fd )

• callback: function( err )

• size: Number, initial block size to be checked
• step: Number, block size increment
• limit: Number, maximum block size to be checked
• callback: function( err, blockSize )

• step: Number, size increment
• callback: function( err, size )

• options: Object
  • firstLBA: Number, first logical block of partition
  • lastLBA: Number, last logical block of partition

• cylinder: Number
• head: Number
• sector: Number

• offset: Number
• length: Number
• buffer: Buffer, optional
• callback: function( err, buffer, bytesRead )

INTERNAL. Used by .readBlocks().

• fromLBA: Number
• fromLBA: Number
• buffer: Buffer, optional
• callback: function( err, buffer, bytesRead )

• offset: Number
• buffer: Buffer
• callback: function( err, bytesWritten )

INTERNAL. Used by .writeBlocks().

• fromLBA: Number
• buffer: Buffer
• callback: function( err, bytesWritten )

• options: Object
  • firstLBA: Number, first logical block of partition
  • lastLBA: Number, last logical block of partition

• lba: Number, logical block address

INTERNAL. Determines if a given LBA is out of bounds of the partition.

• from: Number
• to: Number
• buffer: Buffer
• callback: function( err, buffer, bytesRead )

• from: Number
• data: Buffer
• callback: function( err, bytesWritten )