Problems with a .dmg file

Discussion in 'Mac Basics and Help' started by DFA1979, Sep 10, 2005.

  1. DFA1979 macrumors newbie

    Jul 16, 2005
    i want to open a .dmg file but it starts opening it and verifying it it wont continue to open. this message appears "the following disk images failed to mount" the reason it gives is " invalid checksum" how would i fix this?
  2. Quartz Extreme macrumors regular

    Quartz Extreme

    Jun 9, 2005
    Outside of the box
    At the beginning of a disk image file is the sum of all the bits in that file. The program will then checksum to see if the sum is what is really in the image. If it is off, it reports "invalid checksum"

    If you downloaded it from a website, it likely was corrupted during download, and I would suggest trying to download it again. If you downloaded it from a peer to peer network, the file may be a fake.
  3. DFA1979 thread starter macrumors newbie

    Jul 16, 2005

    thx man
  4. RAS admin macrumors regular

    RAS admin

    Sep 4, 2004
    Berkshires, Mass.
    you can try skipping the checksum verification in order to mount the dmg.
  5. untamedhysteria macrumors regular


    Jul 31, 2005
    the whole point with checksum is to make sure it's actually the file you downloaded...and isn't being corrupted or something being added to it before it gets to your computer....why would you possibly want to disable checksum?

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