title: NTFS - file record size
body: <p>I was wondering about the actual (disk-)size of each MFT record. Since the number of clusters per MFT record is set in the bootsector, i guess each one has the same size.</p>
  
  <p>However, each record header stores an additional value: its <code>Allocated size</code> (at 0x1C). As far as i could observe, this value was always equivalent to the value stored in the bootsector.</p>
  
  <p>Is it possible that these two are different (and when)? 
  If not, the <code>Allocated size</code> value in each record is kind of a waste, right?</p>