ASIF
HoldTools
Apple Sparse Image Format, a sparse virtual disk image format for virtual machines.
Why it's here
Placed in Hold: 1 article(s) of evidence from 1 source(s), led by research-stage coverage, with 0 in the last 30 days. Confidence 24%. Low accumulated evidence, so it defaults conservatively pending more signal.
Evidence (1)
- 5Hacker News·6/28/2026researchReverse Engineering Apple's ASIF Sparse Disk Image Format
The article describes a hands-on reverse-engineering effort to understand Apple's new ASIF disk image format introduced in macOS Tahoe. It shows how the author created a test image, wrote patterned data to it, and began inferring the file structure from hexdumps and parsed fields using dissect.cstruct.