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An external hard drive is used to store data and it is connected to computer externally.  The external hard drive is portable and computer recognizes it by using USB capability. After connecting an external hard drive to a computer, it is accessed like a normal internal hard drive. The internal hard drive is used in [...]

Hard drive is secondary storage device in personal computer. Though primary storage is RAM (Random Access Memory), hard disk drive plays a very important role as all the data, software’s as well as operating system resides on internal hard disk. Hard drives can exist as SATA/SCSI/IDE/ATA etc. We also have external hard drive like pen [...]