Difference between "Disk drives" and "IDE ATA/ATAPI controllers" in Windows Device Manager

They are all related to the hard disk storage. Why devide into two devices, who called who?

8

1 Answer

You're asking about three different things that make a whole:

• Disk drives: storage device hardware itself [HDDs/SSDs]
• Disk controllers: motherboard interface [SATA/SAS] hardware connects to for CPU access
• Device drivers: allows OS to communicate with the hardware controller

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