Hi@akhtar,
To create Physical volume in the Linux system, you need to use pvcreate command. You can go through the below-given example.
[root@localhost ~]# pvcreate /dev/sdb
  Physical volume "/dev/sdb" successfully created.
[root@localhost ~]# pvdisplay /dev/sdb
  "/dev/sdb" is a new physical volume of "20.00 GiB"
  --- NEW Physical volume ---
  PV Name               /dev/sdb
  VG Name
  PV Size               20.00 GiB
  Allocatable           NO
  PE Size               0
  Total PE              0
  Free PE               0
  Allocated PE          0
  PV UUID               KYY6Qd-NyL8-A1ce-I3CN-rzy0-Ebxb-VQgTGC
In this example, I have one Hard Disk named /dev/sdb. I created one Physical volume from this hard disk.