How to get serial number from Mac hard disks?

Question

Is there an easy way to get the serial number of all the hard disks in a Mac using an API?

Basically, I\'m looking for a unique identifier for the hard disk with whi

Answer 1

The drive ID's can be retrieved from the IORegistry as follows:

• Internal drives: IOAHCIBlockStorageDevice string property "Serial Number" inside "Device Characteristics" e.g.: (WD-WCAV5D1345345)

• USB drives : IOUSBDevice string property "USB Serial Number" e.g.: (5743415654564561373734)

• FireWire drives : IOReducedBlockServices number property "GUID" inside "Protocol Characteristics" e.g.: (407345709348650)

• Thunderbolt drives: ??

These ID's are persistent meaning the same external drives connected to different machines will show the same ID.