For example, the MacBook Pro (Non-Retina) is the only laptop apple offers without Flash Storage. However, they are becoming more popular as more and more devices are going portable. Solid state drives are a lot more more confusing and advanced than hard disk drives. Putting a magnet near a HDD will cause the magnetic directions and cause your data to become corrupt. If you're ever seen warnings to not put any magnets near computers, the reason is because of the hard disk drive. If the magnetic direction is the same as the last, no voltage spike is caused and a 0 is created, thus creating binary data (or more commonly known as 1's and 0's). As the head passes over each section of the drive, any change in the magnetic direction will cause a voltage spike, creating a 1. The hard drive reads and writes data by changing the magnetic polarities on the drive. Each have the same purpose, but they function in completely different ways. There are two types of hard drives out there: Hard Disk Drives (HDD) and Solid State Drives (SSD). It is one of the most important parts of the computer and without it, you really couldn't do anything.
This includes all of your documents, pictures, movies, music, applications, and even OS X itself.
The hard drive is a piece of hardware inside your computer that stores all your data. In this tutorial, I will go over how a hard drive works, how to fix common hard drive problems, and end with a discussion on filesystems and how to use them. The hard drive is where all the data on your computer is stored, so when it stops working it can be a bit scary. Hard drives: they are one of the most important pieces of hardware in your computer, and also the source of most problems you will encounter.
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