ubuntu@ubuntu:~$ sudo lsblk
NAME                  MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                     8:0    0 931.5G  0 disk
├─sda1                  8:1    0   243M  0 part /media/ubuntu/a81d8f4b-a160-49a9-ad7a-8819d3585405
├─sda2                  8:2    0     1K  0 part
└─sda5                  8:5    0 931.3G  0 part
  ├─ubuntu--vg-root   252:0    0 915.4G  0 lvm
  └─ubuntu--vg-swap_1 252:1    0  15.9G  0 lvm
sdb                     8:16   1   7.5G  0 disk
└─sdb1                  8:17   1   7.5G  0 part /cdrom
sr0                    11:0    1  1024M  0 rom
loop0                   7:0    0   1.4G  1 loop /rofs