Create partition on master boot record external drive?

Discussion in 'OS X Mountain Lion (10.8)' started by igneousc, Nov 27, 2012.

  1. igneousc macrumors regular

    May 13, 2011
    I have an external hard drive with a few hundred GB on it, but it has around 2.5 TB free. I want to create a partition so I can run time machine on the drive. The current partition is ExFAT, and when I go into disk utility it wont let me add a partition because it uses the master boot record partition scheme. Is there any way to add a partition without wiping the drive? I couldn't find any answers for this, but I'd prefer to find a free program to use if possible since it seems that disk utility can't do this.
  2. prisstratton macrumors 6502a


    Dec 20, 2011
    Winnipeg, Manitoba, Canada
    Time Machine requires a GUID or Apple Partition Map (not MBR).

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