bertrik@bertrik-laptop:~$ cat /proc/partitions 
major minor #blocks name

8 0 244198584 sda
8 1 136769346 sda1
8 2 8445952 sda2
8 3 1627136 sda3
8 4 1 sda4
8 5 20008926 sda5
8 6 3903763 sda6
8 7 73433083 sda7
8 16 3927040 sdb
8 17 3906270 sdb1
8 18 20480 sdb2
bertrik@bertrik-laptop:~$