how to change name of hard disk not partition

Hello,

I did a factory reinstall on my macbook pro 2015 13 retina display.

I deleted the hard disk and the partition then I installed yosemite.

When everything was done i went to disk utility and found out that the hard disk and partition was named untitled. I was able to change the partition to Macintosh HD.

How can I change the hard disk name ?

Someone told me to reinstall again. Will that help ?