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Enable NTFS writing on OS X

One hidden new from Mac OS X 10.6 Snow Leopard : the possibility to enable writing on NTFS partitions (the Bootcamp one where Windows is installed for example). No more need for Tuxera (formerly Fuse+NTFS-3G), nor other pay solutions, in 4 shell lines you can now enable writing on NTFS.

We begin by rename the mount_ntfs executable in charge of mounting NTFS volumes, into mount_ntfs.orig

$ sudo mv /sbin/mount_ntfs /sbin/mount_ntfs.orig

We create (with nano, vi or whatever) a small 2-lines Shell script who will load mount_ntfs.orig with the option -rw (read write) :

#!/bin/sh
/sbin/mount_ntfs.orig -o rw "$@"

We save it in /sbin/mount_ntfs and we change the file rights...

$ sudo chown root:wheel /sbin/mount_ntfs
$ sudo chmod 755 /sbin/mount_ntfs

From now, NTFS volumes will mount with enabled writing.