Can't reformat hard drive for time machine

Discussion in 'macOS' started by winterdude010, Nov 3, 2007.

  1. winterdude010 macrumors regular

    winterdude010

    Joined:
    Feb 24, 2006
    Location:
    New York
    #1
    Hi,

    Just got done installing Leopard, and when it recognized that the external hard drive was is MS-DOS format, it started to reformat it. However, a few seconds after the reformatting begins, and error message pops up saying that the formatting system failed. Why won't it reformat?

    My external drive is a:

    Western Digital My Book Essentials 750GB External Hard Drive
     
  2. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #2
    The problem is that the disk has the wrong partition scheme to host a Mac partition. For this reason, you can't reformat it directly. You must first re-partition it.

    Don't use the Time Machine prompt to reformat it. Open Disk Utility, go to the partition tab, and set it up as a single MacOS Extended / Journaled (HFS+) partition using the GUID scheme (you may have to click on the options button). Then let it partition the drive. After that, it should work fine.
     
  3. winterdude010 thread starter macrumors regular

    winterdude010

    Joined:
    Feb 24, 2006
    Location:
    New York
    #3
    I've been doing it that way (by using disk utility), sorry for not specifying that.
     
  4. psychofreak Retired

    psychofreak

    Joined:
    May 16, 2006
    Location:
    London
    #4
    Disk Utility in 10.5.0 is very buggy, try a few more times...
     
  5. winterdude010 thread starter macrumors regular

    winterdude010

    Joined:
    Feb 24, 2006
    Location:
    New York
    #5
    OK. Solved the problem. I partitioned the drive as free space, and then partitioned it as MacOS Extended/ Journaled and it worked.
     

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