1TB drive only showing 1x161GB partition

Discussion in 'iMac' started by jt6572, Aug 20, 2011.

  1. jt6572 macrumors newbie

    Joined:
    Aug 5, 2011
    Location:
    Perth West Australia
    #1
    hey all
    i have a 1TB external drive i partitioned and used for time machine (which took 161GB) and now i can't get back the rest of the space?

    i have tried to look this up and played in disk utility but can't delete or restore the drive to its full capacity. it is still only showing a 161Gb partition.

    could someone please help me recover the rest of the space? i don't mind deleting or reformatting. would like to just get the space back!

    thank you.
     
  2. Hamilton1963 macrumors regular

    Joined:
    Jun 19, 2010
    #2
    1- Shut down the computer
    2- Turn on the computer
    3- Press and hold Command and R key together and wait for a new screen
    4- Choose disk utilities
    5- Click continue
    6- Click Macintosh HD
    7- Click Erase
    8- Format should read Mac OS Extreme Journaled and name should be Macintosh HD
    9- Click Erase
    10- Quit Disk Utilities
    11- Restart
    12- Press Command R
    13- Click Reinstall Mac OS X
    14- Click Continue
    15- Click Continue
    16- Follow Instruction


     
  3. jt6572 thread starter macrumors newbie

    Joined:
    Aug 5, 2011
    Location:
    Perth West Australia
    #3
    hi hamilton,
    thanks for the post.

    it looks like this is a complete wipe of my OS? all i need is a 1TB external drive to be reset to give me 1TB of space....
     
  4. upaymeifixit macrumors 6502a

    upaymeifixit

    Joined:
    Feb 13, 2009
    #4
    I doubt re-installing will solve his problem.

    You could try the disk utility from Hamilton1963's suggestion.

    Does this only happen on your computer or on any computer? Have you tried erasing it with Windows or Linux?
     
  5. Hamilton1963 macrumors regular

    Joined:
    Jun 19, 2010
    #5
    It'll erase everything.

     
  6. gr8tfly macrumors 603

    gr8tfly

    Joined:
    Oct 29, 2006
    Location:
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    #6
    Definitely don't reinstall the OS for this - it shouldn't have anything to do with an external drive's partition.

    In fact, you don't need to boot into the Recovery HD partition either.

    You'll find Disk Utility in your Utilities folder. Run it, then select the external drive - not the partition. Now click on the partition tab. Take a screen shot of that window and post back. That will help us determine what the current partition map is.


    (screen shot: cmd-shift-4, then space. Place the camera icon over the disk utility window and single click or hit return)
     
  7. jt6572 thread starter macrumors newbie

    Joined:
    Aug 5, 2011
    Location:
    Perth West Australia
    #7
    hi upayme...
    i have tried erasing the external drive in disk utilities to no avail...

    [​IMG]

    just shows as a 160GB drive?
     
  8. gr8tfly macrumors 603

    gr8tfly

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    #8
    The OP has an external drive. Nothing needs to be done to the internal, "Macintosh HD".
     
  9. Hamilton1963 macrumors regular

    Joined:
    Jun 19, 2010
    #9
    I'm sorry, I just realized that you have an external HDD. Don't follow my suggestion. Again, I'm sorry!

     
  10. upaymeifixit macrumors 6502a

    upaymeifixit

    Joined:
    Feb 13, 2009
    #10
    Hi, that was actually gr8tfly that recommended you take the screenshot.

    So right now I am assuming you have the "1TB Maxtor Basics Desk..." selected?

    I think you are doing this right, but just to be sure you can follow this guide. http://macs.about.com/od/applications/ss/diskutilformat.htm

    ----------

    Lol, I wasn't going to say anything about it but I thought you were just trying to be mean and have him erase it. :D
     
  11. Hamilton1963 macrumors regular

    Joined:
    Jun 19, 2010
    #11
    Before you do anything I think you should call tech support for your drive first, and let them deal with this situation.
     
  12. jt6572 thread starter macrumors newbie

    Joined:
    Aug 5, 2011
    Location:
    Perth West Australia
    #12
    :)
    no probs. luckily i read through the instructions before just starting!

    i will check out the link and post back.

    thanks again all for all your help.

    ps: had taken the screenshot, posted and then saw the recommendation i take a screen shot!
     
  13. Hamilton1963 macrumors regular

    Joined:
    Jun 19, 2010
    #13
    LOL! I would never do that.

    [/COLOR]

    Lol, I wasn't going to say anything about it but I thought you were just trying to be mean and have him erase it. :D[/QUOTE]
     
  14. gr8tfly macrumors 603

    gr8tfly

    Joined:
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    Location:
    ~119W 34N
    #14
    You should be able to drag the lower right corner of the 161gb partition down to fill the entire area inside the blue frame. Then, click Apply - it should tell you the partition Untitled will be resized and no partition will be erased.

    The other option, if you don't need to save the data in the 161GB partition is to repartition the drive with a new single partition. Using Erase didn't work, as it only affects the currently selected partition.

    To create a new, single partition, click on the pop-up menu under Partiton Layout. Change "Current" to "1 Partition", make sure the format is Mac OS Extemded (journaled), then click apply. It should say it's erasing all data in the current partition and creating a new single partition.

    Hope this helps.

    Edit: saw you had already taken the screen shot. You were one step ahead! ;)
     
  15. Hamilton1963 macrumors regular

    Joined:
    Jun 19, 2010
    #15
    I'm glad you read before you did anything.

     
  16. upaymeifixit macrumors 6502a

    upaymeifixit

    Joined:
    Feb 13, 2009
    #16
    Haha, I didn't think so.

    No problem. If you find that Disk Utility really won't do it I would recommend using another computer or a different operating system.

    I'm off to bed. Good luck.
     
  17. jt6572 thread starter macrumors newbie

    Joined:
    Aug 5, 2011
    Location:
    Perth West Australia
    #17
    omg. this is like taking your car to the mechanic and then it doesn't make 'the noise'!!

    not sure why, but it simply worked this time.

    thanks very much for all of your help. :D:D:D

    ----------

    me too! lol, thanks for your help hamilton1963 :)

    happy maccing all! :apple:

    jeff
     
  18. gr8tfly macrumors 603

    gr8tfly

    Joined:
    Oct 29, 2006
    Location:
    ~119W 34N
    #18
    and to all a good night!

    Or something like that... ;)

    Glad it's all working for you!
     

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