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NTFS-3G NTFS-3G is an open source cross-platform implementation of the Microsoft Windows NTFS file system with read-write support. Please note that NTFS-3G and FUSE for macOS are independent projects. Should you run into NTFS-3G related issues please post the issues on the NTFS-3G support forum. Installation The following instructions assume that you know how to use Terminal. Doing this the wrong way could damage your operating system. First, download and install the latest release of FUSE for macOS from. You will need at least version 3.0.

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Then, if you don't have it yet, install the package manager 'Homebrew' as described on. Install NTFS-3G from Homebrew by opening a Terminal and entering the following command. Brew install ntfs-3g After installing NTFS-3G you can manually mount NTFS volumes in read-write mode by executing the following commands in Terminal. Replace /dev/disk1s1 with the actual NTFS partition you want to mount. You can find the partition name using diskutil list.

Sudo mkdir /Volumes/NTFS sudo /usr/local/bin/ntfs-3g /dev/disk1s1 /Volumes/NTFS -olocal -oallowother Auto-mount NTFS volumes in read-write mode Even though you have installed NFTS-3G, newly connected NTFS volumes will still be auto-mounted in read-only mode. To change this you need to replace Apple's NTFS mount tool /sbin/mountntfs with the one provided by NTFS-3G.

It is important that you understand the security implications of what you are about to do. The mount tool is executed with root permissions. This means that NTFS-3G's mount tool will be executed with root permissions, too. Due to the way Homebrew installs software packages, NTFS-3G's mount tool is not protected from being tampered with by unprivileged attackers, essentially giving those attackers root access to your Mac.

This is a major security risk. You have been warned. Note: On OS X El Capitan files in the /sbin directory are protected from being tampered with by a new security feature called System Integrity Protection (SIP). SIP does not protect you against the security threat outlined above. To replace /sbin/mountntfs with the version provided by NTFS-3G you will need to reboot your Mac in recovery mode before proceeding. See for details on how to start the recovery system.

Once in recovery mode open a new Terminal window from the Utilities menu. To replace Apple's NTFS mount tool with the one provided by NTFS-3G execute the following commands in Terminal. This will back up the original mount tool to /Volumes/Macintosh HD/sbin/mountntfs.orig. Sudo mv '/Volumes/Macintosh HD/sbin/mountntfs' '/Volumes/Macintosh HD/sbin/mountntfs.orig' sudo ln -s /usr/local/sbin/mountntfs '/Volumes/Macintosh HD/sbin/mountntfs' Uninstallation To uninstall NTFS-3G, open a Terminal prompt and enter the following: brew uninstall ntfs-3g If you have replaced Apple's NTFS mount tool /sbin/mountntfs with the one provided by NTFS-3G to auto-mount NTFS volumes in read-write mode you will need to restore the original mount tool. Note: On OS X El Capitan files in the /sbin directory are protected from being tampered with by a new security feature called System Integrity Protection (SIP).

You will need to reboot your Mac in recovery mode before proceeding. See above for details. Once in recovery mode open a new Terminal window from the Utilities menu.

To restore Apple's NTFS mount tool execute the following command in Terminal. Sudo mv '/Volumes/Macintosh HD/sbin/mountntfs.orig' '/Volumes/Macintosh HD/sbin/mountntfs' Frequently Asked Questions 1. Why is NTFS-3G's write performance so poor?

The ntfs-3g program opens and does I/O to the block device /dev/disknumber of the NTFS volume in question. MacOS does not have a VM buffer cache for block devices when they are accessed in this way. That is the most overwhelming factor, because both metadata operations and file data I/O boil down to read-writes by NTFS-3G to the block device. Suppose we somehow automagically provided unified buffer caching for block devices by essentially making a disk look like a giant file. Even then, macOS and its buffer cache is really happy only when you do I/O that is in units of page size (4KB) and aligned on a page boundary.

To get the most out of the I/O subsystem in macOS, ntfs-3g (or any other program for that matter) would really want to do I/O in multiples of 4KB. For comparison, you should try writing to an NTFS disk image.

You will see that it is considerably faster because you do have some caching in that case. After installing NTFS-3G, my Boot Camp volume stopped showing up in the 'Startup Disk' preference pane. Is reinstalling macOS, Boot Camp, and Windows the only recourse? The 'Startup Disk' preference pane is simply filtering out (that is, not displaying) any mounted volumes that it does not consider bootable. Its definition of a Boot Camp volume includes that the mounted volume either be of type msdos or ntfs - this is hardcoded into the preference pane plugin. This does not mean your Boot Camp volume has become unbootable. It is merely not showing up in the graphical user interface.

You can hold the 'opt' key during startup and choose the Windows partition to boot from. You can also remount it (read-only) using the NTFS file system built into macOS and it should start showing up in 'Startup Disk'.

Windows uses the NTFS hard drive format for its hard drives. Mac OS X can read files on NTFS hard drives, but it can't write files to them, which is a glaring omission. Attempting to drag a file into an NTFS drive in Mac OS X will only result in your mouse cursor turning into an error sign. Since most Hackintoshes dual-boot Windows and Mac OS X, being unable to share files between hard drives can lead to problems with file management.

Fortunately, you can enable NTFS writing on Mac OS X with relatively little trouble. Read past the break for more. LAST UPDATED: December 10, 2013 (Mavericks support) NTFS-3G (Free). Is a Mac app that enables reading & writing to NTFS drives on Mac OS X Snow Leopard for free. You need to install the driver as well, for NTFS-3G to work. Once you've installed both NTFS-3G and Macfuse, you'll be able to write files to your Windows hard drives flawlessly. Unfortunately, development of the Macfuse driver has stopped, so there will likely never be any official support for newer versions of Mac OS X. In Mac OS X Lion, Mountain Lion, and Mavericks, you'll instead have to install the driver, a replacement for Macfuse (be sure to checkmark the 'MacFUSE Compatibility Layer' when running the OSXFuse installer).

However, even with OSXFuse, NTFS-3G does not work fully in Lion, Mountain Lion, or Mavericks; you will still get mounting errors every time your computer boots. To fix these errors, you'll have to install this. These post-Snow Leopard compatibility issues affect all free NTFS enablers, including apps like and. Paragon NTFS ($20). NTFS-3G normally works pretty well on Lion, Mountain Lion, and Mavericks with OSXFuse, but there are paid options as well.

For instance, is a simple $20 app that enables writing to NTFS drives on Mac OS X, with no hassle involved. This app and claim to offer better reading/writing performance than the standard NTFS-3G + Macfuse/OSXFuse setup, though I haven't verified this myself. Tuxera costs $32 and essentially does the same thing as Paragon NTFS, which is why I recommend Paragon's app instead. Ending Notes Though both NTFS-3G and Paragon NTFS work flawlessly for dragging and dropping files into your Windows hard drives from Finder, they're not perfect solutions. Your Windows hard drives have to be remounted every time you reboot, so they're not always available the moment Mac OS X starts up; you have to wait for Disk Utility to mount them.

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This can lead to issues with apps that try to access those drives at startup, e.g.