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Apple Developer Docs

Kernel / ataRegMask / mATACylinderHiValid

mATACylinderHiValid

Declaration

mATACylinderHiValid = 1 << bATACylinderHiValid

Open on developer.apple.com

KernelEnumeration Case

macOS 11.0+

Built on 2026-06-12 · Snapshot snapshot-20260612-beta.1 (macOS 27.0) · Commit fba13e1 · by @g-cqd · based on Apple Developer Documentation