TypefaceJan 15

⚠️ Caution for those of you with ancient fonts ⚠️

Accessing old font files that use a Resource Fork may cause a kernel panic on macOS Tahoe 25.1 & 25.2.

Selecting such a file in Finder will immediately reboot your Mac. Be careful of unsaved data!

ttf/otf files are fine — Resource Fork files were primarily used on classic Mac OS (pre OSX)

Show threadkcǃ

@Typeface thank you for the heads-up!!

Is there a way to scan our hard drives to see if we have fonts that contain Resource Forks?

For example: I might have ancient fonts spread out in packaged archives from old old projects, and having a tool to locate them would be handy.

Jan 15 at 4:57pmIvory for iOS
Show threadTypefaceJan 16

@exkclamation I don't know any tool that can find them, but you could do a search in Terminal if you're comfortable doing that.

Here's a command that searches the current working dir:
find ./ -type f -exec ls -l \{\}/..namedfork/rsrc 2>/dev/null \;

Please don't use this if you're not familiar with Terminal — use at your own risk.

If the files are contained in zips or other archives there is nothing to worry about. The panic only seems to occur when you directly access the file itself.