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I'm using Ubuntu 16.04 on my Macbook pro.

I need help getting write access to my Mac HD from Ubuntu. I can view and open the files in my Mac HD but I cannot write to the Mac HD. The options for "New folder" or "paste" are just grayed out when I'm in the Mac HD.

I have already gone into OS X and disabled journaling but no luck.

EDIT 1: A full history;

When I first installed Ubuntu, I couldn't get ANY access to my Mac HD although I could see it on my "Files" application. I looked up some online solutions and tried this;

  1. sudo apt-get install hfsprogs (install hfs programs into linux)
  2. sudo mount -o force /dev/sdX /your/mount/point (not sure what this is)
  3. sudo mount -o remount,rw,force /mount/point (remount )

...this didnt help.

what worked for me was;

  1. sudo useradd -d /home/tempuser -m -s /bin/bash -G admin tempuser (create a temp user on Linux)
  2. sudo passwd tempuser (setup passwor for new user)

Reboot and log in as tempuser. Then, open up the Terminal and type in the following commands;

  1. sudo usermod --uid 502 myusername( match my Ubuntu UID with that of OS X )
  2. sudo chown -R 502:myusername /home/myusername(no idea what this does)

....but after all this, although I could now access the Mac HD, it remains read only access until now.

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  • You might want to test this command sudo mount -o remount,rw /partition/identifier /mount/point
    – GreggD
    Dec 29, 2016 at 8:11
  • I have just tried that I got "mount: /dev/sda2 not mounted or bad option In some cases useful info is found in syslog - try dmesg | tail or so."
    – Francis part 2
    Dec 29, 2016 at 9:30
  • Never never never do a command in terminal, especially if it starts with sudo, unless you know exactly what it does first.
    – heynnema
    Dec 29, 2016 at 19:40

3 Answers 3

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Have a look at Super User

Disabling journaling from HFS+ is supported until OS X Yosemite 10.10

install hfsprogs sudo apt-get install hfsprogs

then mount sudo mount -t hfsplus -o force,rw /dev/sdx# /media/mntpoint or remount sudo mount -t hfsplus -o remount,force,rw /dev/sdx# /mount/point

To fix improperly unmounted:

sudo fsck.hfsplus /dev/sdx#

EDIT:

After seeing the updated question,you should do:

sudo chmod -R +rw myusername /home/myusername

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  • I had already done the hfsprogs thing to get access to the Mac HD, I retried when you asked me but nothing new....I also just tried "fsck" and I got ** /dev/sda2 ** Checking HFS Plus volume. ** Checking Extents Overflow file. ** Checking Catalog file. ** Checking multi-linked files. ** Checking Catalog hierarchy. ** Checking Extended Attributes file. ** Checking volume bitmap. ** Checking volume information. ** The volume Macintosh HD appears to be OK.
    – Francis part 2
    Dec 29, 2016 at 9:35
  • 1
    @Francispart2, please add the steps you have taken to your post so those don't get re-suggested to you.
    – George Udosen
    Dec 29, 2016 at 9:40
  • do as George suggested,add to your questions what you have done already and the output
    – Arduino_Sentinel
    Dec 29, 2016 at 10:07
  • Ok I have edited my question and I have added the full history of my exploits.
    – Francis part 2
    Dec 29, 2016 at 12:19
  • from the setups you have shown,then give permission to write access like sudo chmod -R +rw myusername /home/myusername
    – Arduino_Sentinel
    Dec 29, 2016 at 14:40
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Your hard disk may have a problem, and then gets placed into read-only mode.

Lets first check the file system for errors...

  • boot to the GRUB menu
  • choose Advanced Options
  • choose Recovery Mode
  • choose root access
  • type sudo fsck -f /
  • run fsck more than once if there were errors
  • type reboot

Then lets check the disk hardware...

  • start the Disks app from the Unity dash
  • select the target disk in the left pane
  • click on the "hamburger" icon located at the top-right of the Disks window
  • select SMART Data & Tests
  • review the data, run the tests
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This is weird but I think I will now answer my own question!...for those who might have the same problem in future.

After messing around trying to implement heynnema's solution, I noticed that my mount options in "Disks" were set to "ro". Even my basic computer knowledge could recognise that meant read only, so(after a bit more research), I deleted the "ro" and bobs your uncle, I now have full access to my Mac HD.

All that was needed was to remove "ro" from "nosuid,nodev,nofail,x-gvfs-show,ro,x-udisks-auth" in the mount options of my Mac partition. I think this is what you might have been suggesting Arduino.

Thanks to ever so much to all of you that responded...Now I just need to find out how to add shortcuts to the contents of my Mac disk onto my Ubuntu desktop!

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  • Oh! You meant r/w access to your "Mac HD" partition from Ubuntu. The way your question reads I took "Mac HD" to mean disk. I thought that your Ubuntu root was r/o.
    – heynnema
    Dec 30, 2016 at 15:48

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