9 Replies Latest reply: Feb 19, 2012 7:56 AM by rayray519
rayray519 Level 1 (0 points)

I am trying to resize my main HD to make room for a new Linux parition (dual boot).


When I use either boot camp or disk utility, I am getting the following error:


Could not modify partition map because filesystem verification failed.


Screen shot 2012-02-12 at 9.21.57 PM.PNG


Any help would be appreciated.


I just want to have a nice dual boot setup with Linux and OSX.


Mac mini, Mac OS X (10.6.8)
  • Allan Eckert Level 9 (50,709 points)

    It says the verification of the partition map failed. So this indicates that the hard drive has serious errors which must be repaired first.



  • rayray519 Level 1 (0 points)

    Ok, thank you Allan, I am trying that right now.  I'll repost my results.


  • rayray519 Level 1 (0 points)

    Same error after verifing & fixing disk permissions:


    2012-02-12 21:47:59 -0500: Preparing to partition disk: “Hitachi HTS545032B9SA02 Media”

    2012-02-12 21:47:59 -0500:           Partition Scheme: GUID Partition Table

    2012-02-12 21:47:59 -0500:           2 partitions will be created

    2012-02-12 21:47:59 -0500:

    2012-02-12 21:47:59 -0500:           Partition 1

    2012-02-12 21:47:59 -0500:                     Name                    : “OSX”

    2012-02-12 21:47:59 -0500:                     Size                    : 273.79 GB

    2012-02-12 21:47:59 -0500:                     Filesystem          : Mac OS Extended (Journaled)

    2012-02-12 21:47:59 -0500:                     Do not erase contents

    2012-02-12 21:47:59 -0500:

    2012-02-12 21:47:59 -0500:           Partition 2

    2012-02-12 21:47:59 -0500:                     Name                    : “linux”

    2012-02-12 21:47:59 -0500:                     Size                    : 45 GB

    2012-02-12 21:47:59 -0500:                     Filesystem          : Mac OS Extended (Journaled)

    2012-02-12 21:47:59 -0500:

    2012-02-12 21:47:59 -0500: Beginning partition operations

    2012-02-12 21:47:59 -0500: Verifying disk

    2012-02-12 21:49:16 -0500: Partition failed for disk OSX Could not modify partition map because filesystem verification failed

    2012-02-12 21:52:37 -0500:

              Name :           Hitachi HTS545032B9SA02 Media

              Type :           Disk



              Partition Map Scheme :           GUID Partition Table

              Disk Identifier :           disk0

              Media Name :           Hitachi HTS545032B9SA02 Media

              Media Type :           Generic

              Connection Bus :           SATA

              Connection ID :           "Lower"

              Device Tree :           IODeviceTree:/PCI0@0/SATA@A/PRT0@0/PMP@0

              Bay :           "Lower"

              Writable :           Yes

              Ejectable :           No

              Location :           Internal

              Total Capacity :           320.07 GB (320,072,933,376 Bytes)

              S.M.A.R.T. Status :           Verified

              Disk Number :           0

              Partition Number :           0

  • Allan Eckert Level 9 (50,709 points)

    I am not talking about verifying and repairing permissions.


    What you need to do is boot from the install DVD for your Mac and run Disk Utility from there to repair the disk.



  • rayray519 Level 1 (0 points)

    understood, I'll try that now and repost results.


  • rayray519 Level 1 (0 points)

    Thanks, that worked well.  I have my partition now.


    Just looking for a good guide on installing Ubuntu Linux now on 4,1 Mac Mini.

  • ds store Level 7 (30,325 points)

    rayray519 wrote:


    Just looking for a good guide on installing Ubuntu Linux now on 4,1 Mac Mini.


    Well glad I caught you.


    You first need to install rEFIt and reboot twice to load into EFI, it hasn't been updated in awhile, but luckily your not on 10.6 so it doesn't matter.


    If you install Ubuntu on Mac without rEFIt, it corrupts your MBR section of your Mac's GUID Partition Map as it thinks it's a PC. Also installs the Linux swap partition into your EFI partition, **** of a mess to fix.


    So once rEFIt is installed, you can install Linux.




    http://lifehacker.com/5531037/how-to-triple+boot-your-mac-with-windows-and-linux -no-boot-camp-required


    However  that link is for a older version of Ubuntu, 10.04, which if you follow the Linux instructions and create the Linux swap and OS partitions, then the install will go fine, you can upgrade from within Linux.


    Problem is Ubuntu and Unity which not many people like and likely untested on Mac's. So your pretty much stuck using a older version. Or forage ahead on your own perhaps with assistance from Linux community.



    A much BETTER solution is to virtualize Linux in a window on OS X Using Virtualbox (free), VMFusion or Parallels Desktop, this way you can try different distros, even run several at once.




    Screen shot 2011-07-13 at 8.00.47 PM.jpg


    Once you've found the one you want (most are going for Linux Mint now, 10.10 can be themed to look like OS X and updated to 11, however not Linux 12)







    Lot's of choice in desktop UI on Linux, lots of distros to chose from too with the Gnome 2 desktop.



    Just note that under virtualization, one doesn't get as much 3D UI perfromance as a direct install.


    Problem is getting drivers.






    All I can say is you'll get it installed easier with older versions of Linux than newer ones or Lion Mac's.


    Once Lion came out it seemed interest in running Linux on Mac's disappeared, and that's a problem because Linux on Mac is a nitch of a 10% market share, so it's really tiny and you need so much help unless your a coder.


    So I would go with virtualization first, until you learn more about what works and doesn't, what you want in your distro and then install it into a partition, done wrong can mess up the machine and leave you offline, unless you got another machine.


    Installing Linux on a Mac is by far the hardest geek thing possible, a run of the mill PC is better for first time installers.


    It could be that later Linux versions can accept a GUID EFI Mac, you just have to research some more. I've gone mostly to virtualization, not much in Linux or computers in general interest me much as it used too.


    Going by this page, you can see 10.10 and 11.11 is progressing slowly on older hardware






    good Luck.

  • ds store Level 7 (30,325 points)

    Here is two guides for your 4.1







    10.10 is as far as it goes, no Unity.


    Looks like 10.10 is your best choice at the moment which works well with the 10.04 guide link from Lifehacker (install then upgrade)  and theme with Macbutntu on Linux Mint 10.10.


    So 10.10 Ubuntu is the limit. Linux Mint is the easiest to install and has all the "stuff" on the DVD install version, then theme to Macbuntu 10.10, then update to perhaps Linux Mint 11 and that's about it. May work.


    Hope that assists, good luck figuring it all out and playing around.

  • rayray519 Level 1 (0 points)

    Thanks very much for all this information ds store!  This will certainly help!


    I have tried this install in the past, but found that when I attempt to boot from the LiveCD, my display always goes into power save mode and I can't get out of it. 


    I haven't been able to find a fix/workaround for this at all.


    I have a Dell ST2310 Monitor running HDMI to the mini right now.


    I think if I can get past this problem, I'll be well on my way to installing Linux.