$ sudo sfdisk -l /dev/sda
Disk /dev/sda: 37,3 GiB, 40020664320 bytes, 78165360 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00043bf2

Device     Boot  Start      End  Sectors  Size Id Type
/dev/sda1  *      2048   499711   497664  243M 83 Linux
/dev/sda2       501758 78163967 77662210   37G  5 Extended
/dev/sda5       501760 78163967 77662208   37G 8e Linux LVM