Help! Can't Boot into Mac!

Discussion in 'Windows, Linux & Others on the Mac' started by aaronhead14, Dec 30, 2010.

  1. aaronhead14 Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #1
    I have a huge problem! I decided to set up boot camp with windows 7 about a week ago. I haven't had any problems except for one thing -- i decided i wanted my windows partition to be larger after i had all my apps installed. So what i did is i shrinked my os x partition and that left some unallocated space. then i went into windows to try and stretch the windows partition, but it wouldn't work... so i downloaded easeus partition manager and tried that too, but it didnt work either. so i decided to try and create a new ntfs volume with the unalocated space. it worked, but ended with an error. then when i checked the volumes in easeus, it said my Mac partition was unallocated space!! but here's where it gets weird: when i'm in windows and i check disk management, it says the mac partition is fine! i even went into the drive (inside of windows) and all my mac files were there! even when i hold down option when i boot, it only displays the windows hard drive, so i can't boot into snow leopard. is there anything i can do without having to reinstall snow leopard? i am backing up all my files right now on an external (since i can view the drive in windows), but i really don't want to have to reinstall all my applications and then transfer my files back over.

    any help is appreciated,
    thanks,
    Aaron
     
  2. aaronhead14 thread starter Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #2
    hmmm, no response... after a whole hour... i guess i just posted at the wrong time of day....

    but seriously... has any one else had this issue? or does anyone know how i can solve this problem?
     
  3. smirk macrumors 6502a

    smirk

    Joined:
    Jul 18, 2002
    Location:
    Orange County, CA
    #3
    Have you tried booting up with the OS X installer DVD, running Disk Utility, and doing a disk verify/repair? Also, do you have access to Disk Warrior? It might be able to help.

    Good luck!
     
  4. balamw Moderator

    balamw

    Staff Member

    Joined:
    Aug 16, 2005
    Location:
    New England
    #4
    The most likely cause of your problem is that your OS X partition got marked as not bootable. (not "blessed")

    I'd first do as smirk says and if the verify/repair doesn't do it, I'd boot from the OS X install disc and try to "bless" the OS X partition.

    And next time, read the guide http://guides.macrumors.com/Extend_or_Resize_Boot_Camp_Partition before you try stuff at random. ;)

    B
     
  5. aaronhead14 thread starter Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #5
    ok, thanks guys. i'll try these out and see what happens. and balamw, i did read that guide. the method i used was "Native OS utilities." But thanks for pointing me in the right direction.

    -Aaron
     
  6. aaronhead14 thread starter Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #6
    ok... i got nothing. when i booted from the SL install disc and went into disk utility, it didn't even show my mac partition on the left side where it shows all the disks... i went into "partition" after clicking on the hitachi disk and it showed that my mac partition was "free space." so i cant even verify and repair it through disk utility! but the weird thing is that i can still view my whole drive in windows. is there some kind of boot disc i can download in windows and burn that will allow me to repair my mac partition?

    thanks again
     
  7. balamw, Dec 31, 2010
    Last edited: Dec 31, 2010

    balamw Moderator

    balamw

    Staff Member

    Joined:
    Aug 16, 2005
    Location:
    New England
    #7
    That sounds like your GPT and MBR partition tables are massively out of sync. OS X is looking at the GPT, Windows is looking at the MBR and they aren't the same.

    You might be able to use a gparted live disc to try and correct things, but it would really be nice to know what's going on first.

    I posted a utility called showpart (from the rEFIt source tree) in this thread: http://forums.macrumors.com/showthread.php?t=1070175 All it does is display the contents of the two partition tables. You should be able to stick it on a USB stick, boot to your OS X install disc, Open Terminal and run it to display what's going on with your partition tables.

    I put a warning in the Native OS Utilities section that it hasn't worked out well and your mileage may vary. Definitely nowhere was Easeus mentioned as a tool that works. My guess is although it claims to support GPT it supports only Windows' variants of GPT and didn't like what it saw from the Mac tools.

    B
     
  8. aaronhead14 thread starter Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #8
    okay, i downloaded showpart, but i'm not exactly sure how to run it in terminal after i boot with the os x disc. i'm just not huge on command line.
     
  9. aaronhead14 thread starter Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #9
    i extracted the zip and put just the file on a thumb drive with nothing else on the drive. just what do i type in terminal?

    thanks a ton

    Aaron
     
  10. balamw Moderator

    balamw

    Staff Member

    Joined:
    Aug 16, 2005
    Location:
    New England
    #10
    When you boot from the OS X install disc there is a menu item called Tools, one of the selections there is Terminal. Insert your USB drive, which will get mounted as /Volumes/<USB> where <USB> is the volume label on your thumb drive. In terminal type:

    Code:
    sudo /Volumes/<USB>/showpart /dev/disk0
    I'm assuming showpart is in the root folder of your USB and your main HDD is available as /dev/disk0.

    B
     
  11. aaronhead14 thread starter Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #11
    Wirelessly posted (Mozilla/5.0 (iPod; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

    Okay so I tried that and all I'm getting is "-bash: sudo: command not found"
     
  12. balamw Moderator

    balamw

    Staff Member

    Joined:
    Aug 16, 2005
    Location:
    New England
    #12
    Grr. I guess you may already have admin rights so try it without the sudo.

    B
     
  13. aaronhead14, Dec 31, 2010
    Last edited: Jan 1, 2011

    aaronhead14 thread starter Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #13
    Wirelessly posted (Mozilla/5.0 (iPod; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

    Hmmm never could get it going. So ive just decided to reinstall SL. But thanks for your help guys!
     
  14. aaronhead14 thread starter Suspended

    aaronhead14

    Joined:
    Mar 9, 2009
    #14
    Alright, everything's back in order now. In case anybody wanted to know.

    Thanks again, and happy new year!
     

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