(HD or HDD)
What are hard drives?
Hard drives were first introduced September 13th 1956. it is mainly one or more platters (like small discs) which are contained inside an airtight case. They are normally 1TB, but can be 2TB or 500GB.
#TIP: new users to computers usually confuse the hard drives space with RAM (memory)!
Internal drives are in every computer, and store all the information.
External drives are optional for your computer, especially if it has a lot of storage on it, but some users prefer to use one to back up their storage.
Phones and Hard Drives
It is possible to link a phone and a hard drives. The best way is probably wireless, otherwise you will need a lot of cables to attatch them.