Reformating an external HD for PC to Mac

Discussion in 'iMac' started by IL2AZ, Oct 23, 2010.

  1. IL2AZ macrumors newbie

    Oct 23, 2010
    I have a Seagate HD that I purchased for PC use, now I'm going to buy a mac, can someone please explain how to reformat the drive for mac. I know that I need to secure the data on it somewhere else while I reformat, but wasn't sure of how to reformat it. Once that process is done, can I put the data back on, or is there an intermediate process there as well. Thanks in advance for the help. :confused:
  2. rkaufmann87 macrumors 68000


    Dec 17, 2009
    Folsom, CA
    Connect the external HD to the Mac

    Open Disk Utility-click on external HD on left pane-click on Erase tab-ensure Mac OS Extended (Journaled) is selected in Format box and click Erase...

    NOTE: This will totally wipe that drive clean so make sure you have backed up all your data on the drive to another source before formatting.
  3. DewGuy1999 macrumors 68040


    Jan 25, 2009
    Warning, Warning, Will Robinson! Formatting a hard drive erases all data on it, make sure you have a readable backup before attempting.

    Formatting & Partitioning a Hard Drive in OS X - Tiger and Leopard

    Assuming you'll be running Snow Leopard, the instructions on the above page for Leopard would apply. As far as moving the existing data back after formatting, you can just copy it back to the hard drive, BUT if your temporary location happens to be a PC or you plan on using the hard drive with a PC after formatting be warned that a PC will not be able to read or write to a Mac formatted hard drive without 3rd party software like HFSExplorer.
  4. omtatsat macrumors member


    Aug 25, 2006
    Zürich Switzerland
    If you format it MS-DOS FAT then it can be read by both Mac and Windows systems.
  5. spinnerlys Guest


    Sep 7, 2008
    forlod bygningen


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