Partitioning a drive for use with time machine and windows

Discussion in 'macOS' started by roger6106, Jul 2, 2008.

  1. roger6106 macrumors regular

    Jun 19, 2007
    I have a 300 GB external hard drive. Using Windows I made a 200 GB NTFS partition. My plan was to later make a 100 GB partition for Time Machine. I have been looking through disk utility, and I have not been able to figure out how to add a partition without erasing the whole drive. I have lots of things stored on the 200 GB NTFS partition, so I don't want to erase the whole drive.

    Does anyone know how to add a Mac partition without losing the NTFS one?
  2. CJRhoades macrumors 6502

    Dec 4, 2007
    Lafayette, IN
    Not possible. The only way to partition a disc is to erase the entire thing. Just backup everything you have on it to you computer or another external HDD. Partition, and then replace.
  3. roger6106 thread starter macrumors regular

    Jun 19, 2007
    I figured out how to do it. I formatted the empty space as a NTFS partition using Windows. I then connected the hard drive to my Mac, and used Disk Utility to erase that partition and reformat it as HFS.

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