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Verifying the integrity of downloaded installer files

Details

  • Verifying that the downloaded file from www.vmware.com is not corrupted.
  • Unable to mount the .DMG image file in Mac OS
  • The following error appears:

    <file_name> is not a valid win32 application

Solution

After downloading an installer file or disc image (.ISO ) you can use the MD5 sum value to verify the integrity of the download. VMware provides the correct MD5 sum on the download page for each file. Compare the MD5 sum output generated with the value posted on the VMware website. If the values do not match, download a new copy of the file as the one you have is corrupted or incomplete.

Windows

Windows does not provide a built-in utility for generating MD5 sum values. You must obtain a third-party utility to do this. Follow the instructions provided with the utility to generate the MD5 sum value. An available third-party utility is MD5: Command Line Message Digest Utility.

Mac OS

To correct this issue in Mac OS:

  1. Start the Terminal application
  2. Type md5 and do not press Return.
  3. Press the space bar.
  4. Drag the downloaded file onto the Terminal application window. The filename is appended to the command.
  5. Click the Terminal window, and press Return.
  6. The MD5 value is generated.
If the file continues to fail to mount:
  1. Repair the disk permissions. For more information, see http://docs.info.apple.com/article.html?artnum=25751 .
  2. Right-click or control-click the file. Click Open With > DiskImageMounter.

Linux / ESX

The ESX service console and most Linux distributions include the command-line utility md5sum .
 
To correct this issue in Linux/ESX:
  1. To check multiple files at once, create a new text file containing all the MD5 values you want to verify with the format:

    <md5_sum_value> <file_name>
  2. Save the file as sums.md5
  3. Run the following command to generate and check the MD5 sum values in the text file:

    md5sum -c sums.md5
Tip: To verify the MD5 sum of a CD-ROM disc, type md5sum /dev/cdrom and press Enter.

Additional Information

For more information, see Using MD5 Checksums .

Keywords

corrupt invalid incomplete downloaded file bad iso tar tgz gzip cd-rom disc image

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Actions
  • KB Article: 1537
  • Updated: Aug 14, 2009
  • Products:
    VMware ACE
    VMware Converter
    VMware ESX
    VMware Fusion
    VMware GSX Server
    VMware Player
    VMware Server
    VMware ThinApp
    VMware Virtual Desktop Manager
    VMware Workstation
    VMware vCenter Lab Manager
    VMware vCenter Lifecycle Manager
    VMware vCenter Stage Manager