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Dissecting Apple's Sparse Image Format (ASIF)

by Erik Schamper schamper.dev

At WWDC 2025, Apple announced macOS 26 Tahoe. One of the new features in macOS Tahoe is a new disk image format: ASIF. Designed for use with virtual machines (its documentation lives under the Virtualization framework), ASIF takes a lot of inspiration from existing virtual disk formats. Practically, that means it’s…
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Systems & PerformanceSecurity & Privacy2026

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Jun 28, 2026Dissecting Apple's Sparse Image Format (ASIF) by supermatou16324

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