HELP! Can't write to external hard drive

Discussion in 'Mac Basics and Help' started by danmc00, Dec 10, 2009.

  1. danmc00 macrumors regular

    Joined:
    Oct 29, 2009
    #1
    I have a Toshiba 250GB external hard drive to back up pictures. I can write to it just fine.
    I also have a Fantom Drive 1TB external. I could write to it last week, but I turned it on this week and I can't write to it. I can still pull stuff off of it, but I can't write to it. What can be causing this? I have already installed MacFuse and NTFS-3G.
    It doesn't make sense to me that I can't write to it all of the sudden.
     
  2. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #2
    Open a Terminal window and run this command, then copy the results back here.

    ls -l /Volumes
     
  3. danmc00 thread starter macrumors regular

    Joined:
    Oct 29, 2009
    #3
    Sorry, but I'm very new to the Mac world. How do I open a terminal window?
     
  4. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #4
    It's an application, which you'll find at /Applications/Utilities/Terminal.app.
     
  5. danmc00 thread starter macrumors regular

    Joined:
    Oct 29, 2009
    #5
    I tried it two different ways and this is what it came up with.


    1s -1 /Volumes
    -bash: 1s: command not found
    1s-1/volumes
    -bash: 1s-1/volumes: No such file or directory
     
  6. JeffMonty macrumors member

    Joined:
    Feb 14, 2008
    #6
    Make sure you type 'ls'. It looks like you typed 1s.

    EDIT: You can also copy and paste what BlueRevolution said above
     
  7. danmc00 thread starter macrumors regular

    Joined:
    Oct 29, 2009
    #7
    I copied and pasted it this time and this is what it came up with.
    The Untitled one is the 1TB external hard drive I am having problems with.

    Last login: Sat Dec 12 16:31:12 on ttys000
    ls -l /Volumes
    total 40
    lrwxr-xr-x 1 root admin 1 Nov 28 20:23 Macintosh HD -> /
    drwxrwxrwx 1 staff 16384 Dec 1 19:29 PHONE
    drwxr-xr-x 1 staff 65536 Nov 17 20:08 Untitled
     
  8. mac2x macrumors 65816

    Joined:
    Sep 19, 2009
    #8
    Looks like it's a permissions problem. My time machine drive is drwxrwxr-x. Does root own the disk? You need to post all of the terminal output.

    Edit:
    Code:
    lrwxr-xr-x  1 root     admin    1 Dec 11 16:49 Macintosh HD -> /
    drwxrwxr-x  6 [my username]  staff  510 Dec  6 18:39 Time Machine Backups
     
  9. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #9
    That looks like all of the output to me.

    In Terminal again, run:

    sudo chmod 777 /Volumes/Untitled

    You'll be asked for a password, which should be the one that you use to log on to your user account. Be aware that you can't see the characters as they're typed (not even ******) but it's still working.
     
  10. mac2x macrumors 65816

    Joined:
    Sep 19, 2009
    #10
    Look closely; there is no owner listed on any of the three but Macintosh HD.
     
  11. danmc00 thread starter macrumors regular

    Joined:
    Oct 29, 2009
    #11
    I deleted all the owner type. I didn't want to post it on a public board.
     
  12. danmc00 thread starter macrumors regular

    Joined:
    Oct 29, 2009
    #12
    Blue Revolution, Here is what I got.


    sudo chmod 777 /Volumes/UntitledLast login: Sun Dec 13 10:20:18 on console
    UserName-iMac:~ danmc96$ sudo chmod 777 /Volumes/Untitled

    WARNING: Improper use of the sudo command could lead to data loss
    or the deletion of important system files. Please double-check your
    typing when using sudo. Type "man sudo" for more information.

    To proceed, enter your password, or type Ctrl-C to abort.

    Password:
    chmod: Unable to change file mode on /Volumes/Untitled: Read-only file system
    UserName-iMac:~ danmc96$
     
  13. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #13
    Ah-ha! Connect the drive to a Windows computer or Boot Camp partition and eject it properly, then try again with your Mac.
     
  14. danmc00 thread starter macrumors regular

    Joined:
    Oct 29, 2009
    #14
    Why would it just do that all of the sudden? I have been writing to it with my iMac for a month now.
     
  15. BlueRevolution macrumors 603

    BlueRevolution

    Joined:
    Jul 26, 2004
    Location:
    Montreal, QC
    #15
    If the hard drive is improperly ejected, NTFS can get corrupted. Windows will automatically fix the problems.
     
  16. danmc00 thread starter macrumors regular

    Joined:
    Oct 29, 2009
    #16
    I brought the external to work so I could hook it up to a PC with Windows. I have safely ejected it. I will put it back on my Mac later today and give update.
     

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