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Why they changed IDE to ATA?
Its so confusing in the device manager to see so many ATA devices which are actually IDE ones. At first, those seems like some relatives of SATA. Why they cannot let the old names remain there?
2 Answers
- ?Lv 51 decade agoFavorite Answer
It's because an IDE device IS an ATA device. Specifically, a PATA device:
- troubled1367Lv 61 decade ago
This is what is found on Wikipedia regarding AT Attachment (ATA) drives or more specifically Parallel ATA.
"The first version of what is now called the ATA/ATAPI interface was developed by Western Digital under the name Integrated Drive Electronics (IDE). Together with Control Data Corporation (who manufactured the hard drive part) and Compaq Computer (into whose systems these drives would initially go), they developed the connector, the signalling protocols, and so on with the goal of remaining software compatible with the existing ST-506 hard drive interface.[2] The first such drives appeared in Compaq PCs in 1986.[3] [4]
The term Integrated Drive Electronics (IDE) refers not just to the connector and interface definition, but also to the fact that the drive controller is integrated into the drive, as opposed to a separate controller on or connected to the motherboard.[5] The integrated controller presented the drive to the host computer as an array of 512-byte blocks with a relatively simple command interface. This relieved the software in the host computer of the chores of stepping the disk head arm, moving the head arm in and out, and so on, as had to be done with earlier ST-506 and ESDI hard drives. All of these low-level details of the mechanical operation of the drive were now handled by the controller on the drive itself. This also eliminated the need to design a single controller that could handle many different types of drives, since the controller could be unique for the drive. The host need only ask for a particular sector, or block, to be read or written, and either accept the data from the drive or send the data to it.
The interface used by these IDE drives was standardized in 1994 as ANSI standard X3.221-1994, AT Attachment Interface for Disk Drives. After later versions of the standard were developed, this became known as "ATA-1".[6][7]"
The New SATA or Serial ATA Drives do bear some resemblances, but the major difference is found in the sense that you can only connect one drive per cable. The Main reason for switching from calling the old IDE drives PATA and the new ones SATA is because by definition they are both IDE Drives. They both contain Integrated Drive Electronics...
