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
PV Size 20.00 GiB
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.