Hard Disk History
- Original IBM PC did not have or support a hard drive. (1981)
- DOS 2 was introduced, with support for storage devices.
- First hard drives appear as external devices with own power supply.
- The IBM XT comes out with a 10MB hard disk built in. (1983)
- The IBM AT introduces an entirely different approach to hard disk systems. (1984)
- DOS 4.0 is released, allowing for larger partitions on the harddrive, thereby allowing
- The IDE standard was proposed by Western Digital and Compaq (1986) in order to
deal with performance limitations.
- EIDE (Enhanced IDE) was introduced by Western Digital (1993) to overcome
limitations in ATA, which IDE was a part of.