Image creation or deployment hangs on "calling subprocess.Popen"

Problem

WhenDuring tryingWindows toimage create a Master image,capture or deploy a freshly captured image on a Windows device,deployment, the entireIVS processcan will stallhang at the message "Calling subprocess.Popen with: parted -m /dev/sda print".

Solution

TheThis causeusually ofpoints this issue isto a bad or unreadable partition table on the machinetarget thatdevice. resultsTo inclear anit, imagingenable creationthe orIVS deploymentdebug stall.prompt, Inboot orderthe toaffected resolvedevice, thisand issue,run youthe willpartition needcleanup to modify a filecommand on the Imagingcorrect Virtualdisk.

Server

The (IVS)sgdisk and--zap command clears partition data on the selected disk. Verify the drive name before running it; the screenshot shows /dev/sda, but your device may use a promptdifferent ondisk the device you are wanting to capture the image from / deploy to. 

The following steps will allow you to clear the error from the device.name.

1. Make a note of the partition that seems to beappears stuck. FromIn the screen shotscreenshot it is "/dev/sda". Your drive may have a different name.

2. OnceAfter you know the drive name, go ahead and turn off the machine that is stuck capturing or deploying the image.

3. Connect to your IVS and run the below command.
   
   

   touch /etc/fw_master_debug

4. PXE boot the machine giving the error again.

5. The machine will go to a prompt where you are able to type the below command. For the example, "/dev/sda", but yours may be different.
   
   

   sgdisk --zap /dev/sda

6. ShutdownShut down the machine you are capturing the image from /or deploying the image to.

7. Run the below command on your IVS to delete the file you created.
   
   

    rm -rf /etc/fw_master_debug

8. PXE boot the machine againagain. toThe image capture or deployment should continue past the image and it will no longerprevious hang at the step.point.