Formatting one partition on external harddrive

Discussion in 'MacBook Pro' started by angeldust33, May 14, 2013.

  1. angeldust33 macrumors newbie

    Joined:
    Sep 30, 2006
    #1
    Hello everyone,

    here's the situation;

    I have an external hard drive with two partitions. I made the mistake of connecting mt Ext HDD to a friend's windows computer and since then one of the Partitions (I think Fat32) cannot be read on any of my macs. It used to work flawlessly earlier.

    My simple questions is, Can i use disk utility to erase and re-format that partition ?

    Basically a lot of space on my HDD is wasted and i want put it to use again without Deleting or formatting the partition that works.

    All help will be much much appreciated.
    Grazie :)

    p.s. i googled but couldn't find a proper answer.
     
  2. ValSalva macrumors 68040

    ValSalva

    Joined:
    Jun 26, 2009
    Location:
    Burpelson AFB
    #2
    FAT32 should be readable on OS X. But as long as the data on the external HDD isn't needed I'd give Disk Utility a try.

    There are a ton of tutorials on how to partition hard drives. Just search for that and you should be good to go.
     
  3. angeldust33 thread starter macrumors newbie

    Joined:
    Sep 30, 2006
    #3
    thanks for your reply.

    But once again.

    The HDD has 2 partitions

    Partition A
    Partition B.

    Partition A is cool i want to keep the data on it.
    PArtition B is the bad one which doesn't show any data.

    I want to erase and reformat ONLY partition B so i can put new data on it
    while keeping PArtition A as it is.

    Is this possible ? and can i use disk utility for this ?

    thanks for your help everyone :)
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    Yes you can. Just start disk util and select partition B then click the minus at the lower left to remove the partition. Then click the plus to add a partition back into the now empty space.
     
  5. MacUser2525 macrumors 68000

    MacUser2525

    Joined:
    Mar 17, 2007
    Location:
    Canada
    #5
    Or you can just click the Partition B and select Erase choosing the file system you want on it to do just the reformatting step by itself with no repartitioning.
     
  6. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #6
    I agree that should work, but it seems some users have had trouble doing so when the second partition was created by a Windows machine. I have no idea why.
     
  7. angeldust33 thread starter macrumors newbie

    Joined:
    Sep 30, 2006
    #7
    Did this Worked Flawlessly in 2 seconds.
    Thank you much :)
     
  8. MacUser2525 macrumors 68000

    MacUser2525

    Joined:
    Mar 17, 2007
    Location:
    Canada
    #8
    Your welcome.
     

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