Parition without losing data possible?

Discussion in 'OS X Yosemite (10.10)' started by 2012Tony2012, Nov 2, 2014.

  1. 2012Tony2012 macrumors 6502a

    2012Tony2012

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    Dec 2, 2012
    #1
    My main hard drive is very large and I wanted to partition it, but without losing Yosemite data on it...possible?
     
  2. Intell macrumors P6

    Intell

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    #2
    In most cases it is possible. You can partition your drive using Disk Utility.
     
  3. 2012Tony2012 thread starter macrumors 6502a

    2012Tony2012

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    Dec 2, 2012
    #3
    So you mean it may lose all my data?
     
  4. Intell macrumors P6

    Intell

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    #4
    Disk Utility will warn you if it is unable to partition the drive without erasing it. In most cases, it does not have to be erased.
     
  5. Alimar macrumors 6502a

    Alimar

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    Sep 17, 2014
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    New York State
    #5
    It will work, if done correctly, without erasing any data. Just don't make the new partition so large that you leave little space for future Yosemite partition storage (leave enough room for installs, virtual memory, files, etc.). Also, don't make your new partition too small. Good rule: take half of what you have left. It is harder to reconstitute space afterwards. Deleting an unwanted partition later... or enlarging it... can be a huge pain in the arse. Been there...:mad:
     
  6. simonsi macrumors 601

    simonsi

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    Jan 3, 2014
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    Auckland
    #6
    I did this the other day, DU is pretty good at confirming if no partition data will be erased as a result.

    In my example I shrank a single 1TB partition on a 1TB drive to 900GB and then created a new 100GB partition in the resulting space, with no data loss.
     
  7. 2012Tony2012 thread starter macrumors 6502a

    2012Tony2012

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    Dec 2, 2012
  8. Truefan31 macrumors 68040

    Truefan31

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    Aug 25, 2012
    #8
    Can u use disk utility to take away a partition without losing data
     
  9. simonsi macrumors 601

    simonsi

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    Jan 3, 2014
    Location:
    Auckland
    #9
    Yes if you copy any data on the partition off first, or there is no data on it in the first place. If you remove a partition then you lose any data on that partition if you don't have a copy.

    If there is data on a partition you can shrink it to the size of the data, or expand it into free space on the disk that isn't part of a partition.
     

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