- The first portable computer to have a hard drive was the IBM P70. The hard drive capacities available for this system were 30 megabytes, 60 megabytes and 120 megabytes.
- In 2009, the most common laptop hard drive size is called 2.5-inch, referring to the size of the platters contained within. Outer dimensions are normally 2.75 inches wide, 0.37 inches high and 3.96 inches long.
- The average laptop hard drive spins at 5,400 rpm. Other speeds available are 4,200 rpm and 7,200 rpm.
- in 2009, the largest laptop hard drives available were the Western Digital Scorpio Blue series in 750 gigabyte and 1 terabyte sizes. They are 3 millimeters thicker than commonly available laptop hard drives, which means they will not fit in all hard drive slots.
- Upgrading your laptop to a larger capacity hard drive is easy. Most laptops have a panel on the bottom that opens to reveal the hard drive. Replace your hard drive with a larger one. Reinstall your operating system to enjoy your upgraded laptop.
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