mpx@FX-4100-Linux:~$ cat /proc/partitions
major minor  #blocks  name

   8        0   62522712 sda
   8        1     102400 sda1
   8        2   40857600 sda2
   8        3          1 sda3
   8        5   17653760 sda5
   8        6    3905536 sda6
   8       16  976762584 sdb
   8       17  798050304 sdb1
   8       18          1 sdb2
   8       19  126021632 sdb3
   8       21   41942880 sdb5
  11        0    1048575 sr0
  11        1    1048575 sr1
   8       32    3915776 sdc