These instructions have been liberally copied from this excellent blog post.

Step 1. Install the ntfs-3g port.

sudo port install ntfs-3g

Step 2. Find out your userid and groupid.

User ID:

id -u

Group ID:

id -g

Step 3. Use a modified mount_ntfs executable and save the OS X original to /sbin/mount_ntfs.orig

(Note to do this under El Capitan, you must first disable SIP. See this how-to

On 10.15 Catalina, you don't need to disable SIP, but you will need to do the following command first:

sudo mount -uw /

The reason is because the OS mounts the root filesystem as 'read-only'. The above command will make it writeable only for this instance. It will turn to back to 'read-only' when you restart.)

sudo mv /sbin/mount_ntfs /sbin/mount_ntfs.orig
sudo touch /sbin/mount_ntfs
sudo chmod 0755 /sbin/mount_ntfs
sudo chown 0:0 /sbin/mount_ntfs
sudo nano /sbin/mount_ntfs

Then paste in the following code and save it by typing Control-X and pressing "Y". NOTE:

  • You can optionally substitute in your User ID and Group ID (from Step 2 above) in place of 501 and 20 in lines 4 and 5 below.
  • This script also assumes the standard MacPorts install location of /opt/local/ so you will need to modify it if yours is different.
if [ `/usr/bin/stat -f "%u" /dev/console` -eq 0 ]; then
        USERNAME=`/usr/bin/defaults read /Library/Preferences/ | /usr/bin/grep autoLoginUser | /usr/bin/awk '{ print $3 }' | /usr/bin/sed 's/;//'`
        if [ "$USERNAME" = "" ]; then
                until [ `stat -f "%u" /dev/console` -ne 0 ] || [ $TIMEOUT -eq 0 ]; do
                        sleep 1
                        let TIMEOUT--
                if [ $TIMEOUT -ne 0 ]; then
                        USER_ID=`/usr/bin/stat -f "%u" /dev/console`
                        GROUP_ID=`/usr/bin/stat -f "%g" /dev/console`
                USER_ID=`/usr/bin/id -u $USERNAME`
                GROUP_ID=`/usr/bin/id -g $USERNAME`
        USER_ID=`/usr/bin/stat -f "%u" /dev/console`
        GROUP_ID=`/usr/bin/stat -f "%g" /dev/console`

/opt/local/bin/ntfs-3g \
         -o volname="${VOLUME_NAME}" \
         -o local \
         -o negative_vncache \
         -o auto_xattr \
         -o auto_cache \
         -o noatime \
         -o windows_names \
         -o user_xattr \
         -o inherit \
         -o uid=$USER_ID \
         -o gid=$GROUP_ID \
         -o allow_other \
         "$@" &> /var/log/ntfsmnt.log

exit $?;
Last modified 17 months ago Last modified on Oct 18, 2019, 11:15:07 AM