Can't Transfer Files to External Hard Drive Anymore

How I fixed this problem on my 2011 MacBook Pro...

1. Press "F4"

2. Find "Disk Utility" & Click on it

3. Right Click on "Mac HD" & Left Click on "Reveal Mac HD in Finder". A new window (1) will open.

4. In that new window (1) Right Click on "Mac HD" & Left Click on "Get Info". This will bring up another window (2).

5. in this new window (2), The bottom right corner will have a Golden Lock in it's locked position. Left Click on the Golden Lock.

6. A small window will open & It will say: "Finder wants to make changes. Type your password to allow this." Your username should automatically be typed in there already. Just type in your password and press enter. That small window will close & it'll show New Window (2) With the Golden Lock in it's UNLOCKED POSITION. Now you are able to make changes in the "Sharing & Permissions" section.
7. Look at the "Privilege" Column & Left Click & Change any of those with "Read only" to "Read & Write".
8. Once every "Privilege" row states "Read & Write", Left Click on the Unlocked Golden Lock & it will lock again.

9. Lastly, Restart your computer. Log in. Plug in your external Hard drive. Drag and drop files in & out of it. After that, you're done.

* Hope this helps someone...

Thank you thank you thank you!!!!! This post (from 2014!!) SAVED me so much time and effort!!! I got a new iMac and still use Windows at work, so I needed to have a transferable device. You rock - thank you again!!

Here is how to make your drive read and writable without any formatting to the drive.

1. On your Apple computer, connect an NFTS-formatted drive to an external port. Take note of the volume name, as you'll need it later.
2. Launch Terminal.app and type in the following command, entering the admin password when prompted (Figure A).
   sudo nano /etc/fstab
   Figure A
   

This will open the fstab file that is blank by default. Now, using the volume name, enter the following command (Figure B).

LABEL=VOLUME_NAME none ntfs rw,auto,nobrowse

Figure B

Then just press enter......(DONE) 🙂

Thank you sooooo much!!!! I fixed my problem and feel so relieved!