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This issue has been plaguing me for months! Whenever I try to extend the size the hard disk of a virtual machine (Windows 7 Guest on MacOS Host) I get the following error:

One of the parameters supplied is invalid (0x100003e80)

I've tried:

  • Reinstalling VMware Fusion
  • Upgrading to VMware Fusion v11.1
  • Changing the Bus type
  • Using the following command in terminal"

"/applications/VMware Fusion.app/Contents/Library/vmware-vdiskmanager" -x 120Gb "/Users/me/VMs/Windows 7 x64.vmwarevm/Virtual Disk.vmdk"

All to no avail.

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VMware KB suggests a fix for another VMWare hard disk issue which seems to also fix the resizing issue I've been having.

  • Shutdown and VM and quit VMware Fusion
  • Open up the .vmwarevm package
  • Back up a Virtual Disk.vmdk
  • Open Virtual Disk.vmdk in an editor
  • Toward the bottom, there was a line ddb.adapterType = "“ide”"
  • I Replaced it with ddb.adapterType = "lsilogic"

That seemed to do the trick, hard disk expansion went off without a hitch.

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