Lost all hard drive partitions after Windows Update

Discussion in 'Windows, Linux & Others on the Mac' started by D A, Jun 26, 2010.

  1. D A macrumors regular

    Nov 21, 2008
    I just booted into Windows and saw that there were some Windows Updates available and it asked me to reboot the computer however it failed to boot into Windows. So I restarted and tried to boot into OS X instead, but that didn't work either.

    So I put in the OS X install DVD and checked out Disk Utility. Turned out that all my partitions where screwed up. There were 3 partitions listed as Windows_ldm, with incorrect sizes (I had 4 partitions before).

    Long story short: I'm now reinstalling OS X and I lost everything I had on the drive, I think. I'll try some restore software once I've gotten OS X installed.

    A little pissed right now... How the heck can Windows F up the entire drive?
  2. ahm macrumors member

    Feb 14, 2009
    That's strange. I just installed Windows 7 and all of the updates and did not encounter such a problem. Could it be something else that caused it?
  3. panzer06 macrumors 68030


    Sep 23, 2006
    You didn't change the drive letters for the OS X partitions while in windows did you. As you can see here, that will mess up partition table.


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