Can't repair Macintosh HD - incorrect number of file hard links

Hi,
Under Maverick, my computer started to become slow.  I see the spinning wheel frequently.  I upgraded to Yosemite telling myself that the new OS X installation process would clean anything not working properly under Maverick.  However, my computer is still slow.
I tried to verify the Macintosh HD using disk utility and an error prompted me to repair my hard drive because of an error. 
My Yosemite is in French : Nombre de liens physiques du fichier incorrect. 
I think it would translate to incorrect number of file hard links.
When rebooting using Command - R and verifying my Macintosh HD with the disk utility, it found no error and consequently, the repair function did not help.
When rebooting and running disk utility, I still have the incorrect number of file hard links error.  I have a MacBook Pro 2012
1.  Is the error incorrect number of file hard links causing my computer to be slow?  What is this error?
2.  What should I do to correct this if the disk utility does not find an error when rebooting using command - R?
3.  I have back-up using time machine, but I'm unsure that I should be restoring these back-up : not sure exactly when the error started and if I restaure a back-up "pre-error", would it correct the error?
Thanks for your help

Thank you for the reply! I can't remember what it said after the repair except for the big green letters telling me that the volume appears to be working. I just ran a verify from the install disc again and the message read " the volume appears to be working ok". After that I ran another verify from the hard drive and got the incorrect # of file hard links, volume header needs minor repair, the volume HD was found corrupt and needs to be repaired, Error this disc needs to be repaired. Start up your computer with another disc and use disc utility to repair this disc.
     The computer seems to be running great, I am fully backed up but not sure how concerned I should be.

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    Warning: SUID file "System/Library/PrivateFrameworks/Admin.framework/Versions/A/Resources/writecon fig" has been modified and will not be repaired.
    Warning: SUID file "usr/libexec/authopen" has been modified and will not be repaired.
    Warning: SUID file "System/Library/CoreServices/Finder.app/Contents/Resources/OwnerGroupTool" has been modified and will not be repaired.
    Warning: SUID file "System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/MacOS/ARDAg ent" has been modified and will not be repaired.
    Warning: SUID file "usr/bin/at" has been modified and will not be repaired.
    Warning: SUID file "usr/bin/atq" has been modified and will not be repaired.
    Warning: SUID file "usr/bin/atrm" has been modified and will not be repaired.
    Warning: SUID file "usr/bin/batch" has been modified and will not be repaired.
    Warning: SUID file "usr/bin/chfn" has been modified and will not be repaired.
    Warning: SUID file "usr/bin/chpass" has been modified and will not be repaired.
    Warning: SUID file "usr/bin/chsh" has been modified and will not be repaired.
    Permissions verification complete
    Verifying volume “HD”
    Performing live verification.
    Checking Journaled HFS Plus volume.
    Checking Extents Overflow file.
    Checking Catalog file.
    Checking multi-linked files.
    Incorrect number of file hard links
    Checking Catalog hierarchy.
    Checking Extended Attributes file.
    Checking volume bitmap.
    Checking volume information.
    The volume HD needs to be repaired.
    Error: Filesystem verify or repair failed.

    Two things. First for the permissions check, reinstall the 10.5.2 COMBO update and repair permissions. That should fix things. Alternatively, search these forums for ACL, sort by date, and read the responses and the article Apple posted three months ago: http://docs.info.apple.com/article.html?artnum=306925
    Second, for the *Incorrect number of file hard links* error, follow smithrj's advice. If DU can't repair the disk, you'll need something stronger, such as DiskWarrior.
    BTW, please update your *My Settings* profile info. It still shows that you're running Tiger.

  • Only turns on in OSX Recovery, Disk Utility can't repair disk

    Hi guys, I really need your help, as my Macbook Pro running on OSX Mavericks is having problems.
    Today I turned my Mac on, and it started up with a loading wheel and a loading bar. When the loading bar finished, the Mac turned itself off. I tried many times, same happened every time. I then went into OSX Recovery, started repairing Macintosh HD, but the error message saying "Disk Utility can't repair Macintosh HD" came up and now I don't now what to do.
    Is there any way I can back up my files in this situation?
    Is there any way I can repair the disk without having to erase all data and reinstalling OSX?
    Or do I really need to bring it to a Apple Store for repair?
    Thx for reading

    If you have access to another Mac and both computers have the appropriate connects, try the Target Disk mode to see if you can copy the files.
    Target Disc Mode
    Is there any way I can repair the disk without having to erase all data and reinstalling OSX?
    No.

  • After getting the dreaded gray/blue screen, I tried to run disk repair on the internal disk. I got an error message saying "Disk Utility can't repair this disk and restore your backed-up files. The volume Macintosh HD could not be verified completely

    After getting the dreaded gray/blue screen, I tried to run disk repair on the internal disk. I got an error message saying "Disk Utility can't repair this disk and restore your backed-up files. The volume Macintosh HD could not be verified completely." What do I do now? This is an iMac and I'm running 10.6.8.

    Clean Install of Snow Leopard
    Be sure to make a backup first because the following procedure will erase
    the drive and everything on it. See below for how to clone a drive.
         1. Boot the computer using the Snow Leopard Installer Disc or the Disc 1 that came
             with your computer.  Insert the disc into the optical drive and restart the computer.
             After the chime press and hold down the  "C" key.  Release the key when you see
             a small spinning gear appear below the dark gray Apple logo.
         2. After the installer loads select your language and click on the Continue
             button. When the menu bar appears select Disk Utility from the Utilities menu.
             After DU loads select the hard drive entry from the left side list (mfgr.'s ID and drive
             size.)  Click on the Partition tab in the DU main window.  Set the number of
             partitions to one (1) from the Partitions drop down menu, click on Options button
             and select GUID, click on OK, then set the format type to MacOS Extended
             (Journaled, if supported), then click on the Apply button.
         3. When the formatting has completed quit DU and return to the installer.  Proceed
             with the OS X installation and follow the directions included with the installer.
         4. When the installation has completed your computer will Restart into the Setup
             Assistant. Be sure you configure your initial admin account with the exact same
             username and password that you used on your old drive. After you finish Setup
             Assistant will complete the installation after which you will be running a fresh
             install of OS X.  You can now begin the update process by opening Software
             Update and installing all recommended updates to bring your installation current.
    Download and install Mac OS X 10.6.8 Update Combo v1.1.
    You may be able to backup your data if you have an erased external drive you can use. Before you do the above but after you have opened Disk Utility you can try to clone your drive:
    Clone using Restore Option of Disk Utility
      1. Open Disk Utility.
      2. Select the destination volume from the left side list.
      3. Click on the Restore tab in the DU main window.
      4. Select the destination volume from the left side list and drag
           it to the Destination entry field.
      5. Select the source volume from the left side list and drag it to
          the Source entry field.
      6. Double-check you got it right, then click on the Restore button.
    Destination means the external backup drive. Source means the internal startup drive.
    Now this will only work if the drive is accessible and can be cloned by Disk Utility. Otherwise, you would need to access your drive from another Mac that you can connect via Firewire - Target Disk Mode.

  • Disk utility can't repair the Macintosh HD, asking toback up all files as possible? and how to  reformat the disk?

    disk utility can't repair the Macintosh HD, asking toback up all files as possible? and how to  reformat the disk?

    Some problems can indeed be fixed this way. But working from Recovery_HD or Disk Warrior DVDs and working in the restricted environment those provide can be difficult. You can literally spend days working on this problem (while your regular work is unavailable) only to discover the old drive is unsalvageable.
    There is no way to know up front whether you are facing a major Hardware failure or a minor software glitch, or something in between. Often you are forced to work from the drive you no longer trust. I continue to recommend you do this work from a different, fully functioning Mac OS X booted from a different drive.
    If you have had the foresight to (as The hatter often recommends) clone your virgin install onto another drive for use in such situations, you will be able to recover from such problems in record time. If not, my previous recommendations stands:
    Buy a new Drive. Or  two. Install Mac OS X from scratch on a new drive, and get your Mac running again. Later, you can use the full power of Mac OS X to attempt to rescue your data, if needed. Then Zero the old drive, to see if it can hold data again reliably.
    If the old drive eventually provides some needed data, and is salvageable, Merry Christmas.

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