Extend native file handling in OS X (was OSXFUSE)

FUSE for macOS

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FUSE 4.2.1

  -  5.7 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of FUSE 4.2.1.


For those interested in downloading the most recent release of FUSE for macOS or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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Download FUSE 4.2.1

  • FUSE 4.2.1 Screenshots

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    FUSE 4.2.1 Screenshot 1
  • FUSE 4.2.1 Screenshot 2

What's new in this version:

- Fix race condition that can result in mkdir(2) returning EINVAL when creating multiple directories recursively
- Fix race condition when removing a directory or creating a symlink
- Add workaround for an infinite write loop when unmapping a file from memory on Apple Silicon
- On Apple Silicon munmap(2) might trigger a write, regardless of whether the mapped file was modified or not. This unnecessary write would update the file's modification time, which in turn might cause security software to scan the file. If such a scanner maps the file to memory, the file's modification time will get updated again as soon as the scanner calls munmap(2). This triggers another scan cycle and so on.
- Add workaround for a missing TARGET_OS_OSX macro in Xcode 13's sys/cdefs.h kernel header
- Improve support for non-latin languages by adding support for returning file names in the Unicode Normalization Form D (NFD) in the readdir callback
- Finder and other macOS system tools expect file names to be in the D form. Using the C form can result in unexpected behavior, e.g. file names not being displayed in Finder under certain conditions. See Unicode Normalization Forms for details.
- Improve detection of remote file changes and prevent unnecessary writes
- Set minimum I/O size value (iosize mount option) to the platform's page size. On Apple Silicon the minimum I/O size is 16,384 bytes. On Intel it is 4,096 bytes. Using an I/O size value less than the platform's page size can cause hangs.
- Perform synchronous writes when unmapping a file from memory. When the last munmap(2) completes, the file will have been written to the backing storage.

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