check lsblk on root [root@oracle19ctest ~]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 0 60G 0 disk ├─sda1 8:1 0 1G 0 part /boot └─sda2 8:2 0 59G 0 part ├─ol-root 252:0 0 39.6G 0 lvm / └─ol-home 252:1 0 19.4G 0 lvm /home sdb 8:16 0 20G 0 disk └─sdb1 8:17 0 20G 0 part sdc 8:32 0 20G 0 disk └─sdc1 8:33 0 20G 0 part sdd 8:48 0 20G 0 disk └─sdd1 ...