Red Hat Training

A Red Hat training course is available for Red Hat Enterprise Linux Removing the Old Physical Volume from the Volume Group

After you have moved the data off /dev/sdb1, you can remove it from the volume group.
# vgreduce myvg /dev/sdb1
  Removed "/dev/sdb1" from volume group "myvg"
You can now reallocate the disk to another volume group or remove the disk from the system.