#apfs — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #apfs, aggregated by home.social.
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How long until my backup storage is full? DeltaFree can inform you
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Identify files in APFS using inode numbers
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Use Howard Oakley’s free Mints app to verify whether your external drive does get trimmed correctly when it’s mounted.
#macos #apfshttps://eclecticlight.co/2026/08/13/why-and-how-to-check-your-ssds-trim-correctly/
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Why and how to check your SSDs Trim correctly
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In summary:
“Removal of support for encrypted HFS+, due in macOS 28 next year, doesn’t affect access to or use of encrypted disk images.Although in situ conversion from encrypted HFS+ to APFS Encrypted may prove an effective solution for disks used for general storage, it’s unlikely to succeed on Time Machine backups.”
#macos #apfs #hfs+ #encryptionhttps://eclecticlight.co/2026/07/28/what-is-happening-to-encrypted-hfs/
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Apple now lets you convert encrypted HFS+ to APFS directly in Disk Utility, with no decryption step, ahead of macOS 28 dropping support entirely.
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What to do with your encrypted HFS+ disks
https://fed.brid.gy/r/https://eclecticlight.co/2026/06/17/what-to-do-with-your-encrypted-hfs-disks/
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Speculative telemetry is an APFS feature that tracks the lifecycle of speculatively downloaded files: content fetched to local storage before the user explicitly requests it, such as files prefetched by iCloud or the App Store.
https://jtsylve.blog/post/2026/06/12/APFS-Speculative-Telemetry
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Volume grafting mounts a disk image's APFS contents as a subdirectory of an existing volume. This is the mechanism behind Cryptexes, RSRs, and system extensions.
New post on the lifecycle, constraints, and on-disk metadata:
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Today's post covers APFS encryption rolling, the background process that encrypts, decrypts, or re-keys an entire volume’s data while the system continues operating.
https://jtsylve.blog/post/2026/06/10/APFS-Encryption-Rolling
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We previously covered how APFS clones files via shared extents. APFS also tracks which inodes share physical data through a higher-level structure: clonegroups. Today's post breaks down the clonegroup tree and how it manages cloned files. https://jtsylve.blog/post/2026/06/09/APFS-Clonegroups #dfir #apfs
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APFS supports transparent file compression through DECMPFS. Files may appear normal to applications but store their data in a compressed form on disk. This post covers the on-disk format, compression types, and how to parse compressed files.
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How does APFS keep track of hard links, where multiple directory records all point to a single inode?
A mechanism called siblings. Today's post digs into the SIBLING_LINK and SIBLING_MAP record types:
https://jtsylve.blog/post/2026/06/05/APFS-Siblings
#dfir #apfs -
APFS containers include an embedded EFI driver that allows UEFI firmware to boot from APFS partitions without requiring a built-in APFS driver. This post covers the nx_efi_jumpstart_t structure and the boot procedure that uses it.
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Following up on our Containers post: the Reaper is APFS's garbage collector, handling deletions too large for a single transaction (entire volumes, snapshot cleanup). This post digs into its on-disk structures and multi-phase state machine.
https://jtsylve.blog/post/2026/06/03/APFS-Reaper
#dfir #apfs -
BSD flags are incompatible with iCloud Drive
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How does APFS actually track which blocks are free across storage tiers? Our new post cracks open the Space Manager's on-disk structures: chunk tracking, free queues, internal pool, and allocation zones.
https://jtsylve.blog/post/2026/06/02/APFS-Space-Manager
#dfir #apfs -
Protect files with the Locked or Immutable flag
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Just an update to my Mac Mini M1 drive corruption error message on Disk Utility... It is fixed!
View full note: https://burgeonlab.com/notes/2026/0512-1385/
Syndicated via https://getindiekit.com
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Last Week on My Mac: snapshots, the elephant in APFS
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Weeknote 2026-W18 is cancelled due to illness, plus my Mac is also "sick" with memory corruption issues.
View full note: https://burgeonlab.com/notes/2026/0507-91551/
This is post 39 of #100DaysToOffload
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The Dictionary on M1 Mac crashed twice. I ran Disk Utility and my data volume dev/rdisk3s1 was 'found to be corrupt and needs to be repaired'. The log says 'performing deferred repairs', 'it appears to be OK'. But when I run it again the same corrupt message reappears. 😔 In recovery mode, tried running fsck_apfs but can't do anything: 'failed to enable crypto I/O mode for container /dev/rdisk3s1: invalid argument'. Will try turning off fire fault. #Mac #AskFedi #troubleshooting #fsck #apfs
