The most common hard drives of all are the internal hard drives. The internal hard drive lives inside the computer tower and through this it is connected to the motherboard. Internal hard drives offer a primary storage media for your computer and stores all the information, files and programs used by the operator.
The way in which an internal hard drive works is that the computer sends a request for the data, the controller receives this request and checks the system to check where that data is stored. The data then goes to a temporary location and is kept there while the information is completed. Once all data on the file is read the controller then sends it to the operating system where it can be accessed by the user of the computer.
Sometimes you have that needs to be stored, in this case the process is still controlled by the controller, first the registry is checked to see if there is enough space to store the document or file you would like stored. Once the file has been stored the hard drive prepares itself for when that file is next needed.
However, there are times when this process goes wrong, this can be a computer over-heating, crashing, being damaged or ‘dying’ and in this case you need to call in the hard drive recovery or server recovery experts to help you get your ‘missing’ files back.