# Developer reports macOS 27 failures accessing encrypted HFS+ storage

_Published Tuesday, November 3, 2026 at 5:29 PM EST · Products · Latest · Tier 2 — Notable_

Developer Wade Tregaskis reports that macOS 27 fails to mount encrypted HFS+ volumes managed through CoreStorage using Disk Utility or normal command-line tools. His tests also encountered failures converting the volumes to APFS or erasing them through standard tools.

A lower-level mounting command did provide read-only access, qualifying the apparent loss of support. Tregaskis could not obtain read-write access and ultimately rebuilt his volumes from backups. He also reports that macOS displays a warning identifying macOS 28 as the version that will lose support, despite the failures he encountered in macOS 27.

## Sources

- [wadetregaskis.com](https://wadetregaskis.com/macos-27-golden-gate-does-not-actually-support-corestorage-or-hfs-volumes/)

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Canonical: https://techandbusiness.org/newswire/krEUWAn2MZSu4aZC36IsYE
Published: 2026-11-03T22:29:10.687Z
Story chronology: 2026-11-03T07:49:06.000Z
Retrieved: 2026-11-04T01:30:01.137Z
Publisher: Tech & Business (techandbusiness.org)