major minor  #blocks  name

  43        0    1024000 nbd0
  43       32    4194304 nbd1
   8        0  487849984 sda
   8        1     975872 sda1
   8        2          1 sda2
   8        5  486871040 sda5
 253        0   19529728 dm-0
 253        1    1949696 dm-1