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Table Of Contents  CertiGuide to A+ (Core Hardware)
 9  Chapter 0100:  Hard Drives
      9  VI  Older Hard Drive Technologies and Interfaces

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 VII  IDE
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ESDI

A few manufacturers had Maxtor leading the charge for more speed and capacity over MFM. Using the same set of cables as MFM (the set was a single 34-pin cable that could support 2 drives, and a 20 pin cable for each drive) it moved the error checking along with the encoding and decoding to the drive, off the controller, making it faster than MFM. This was the rationale behind the Enhanced Small Device Interface (ESDI).

[spacer]Floppies are still MFM

None of the encoding schemes beyond MFM made it to the floppy drive because the need for more efficiency was not considered necessary but backward compatibility with existing media was considered crucial.



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