Extending an existing volume group.
 

Dear All,
I have a query. recently I had to create additional mount points on a vm. I added a virtual HDD for this purpose. The new disk was detected as /dev/hdb. So my query is...
Do I have to create one single partition on /dev/hdb, then change type to 8e, and then add it to existing vg??? ...OR...
Can I directly select /dev/hdb and change type to 8e and then add it to the vg without creating a partition???

Both are possible:
- Anatomy of LVM
- The Linux Logical Volume Manager
- Logical Volume Management

I like to use partitions, this way the general layout stays the same. But this is a personal preference.