Consumer@Laptop:~$ sudo pvs /dev/sdc: open up unsuccessful: No medium discovered /dev/sdd: open failed: No medium identified /dev/sde: open up failed: No medium observed /dev/sdf: open up unsuccessful: No medium found /dev/sdc: open failed: No medium located /dev/sdd: open up failed: No medium located /dev/sde: open up unsuccessful: No medium observed https://jaspertzfkq.blue-blogs.com/32854366/an-unbiased-view-of-services