Resetting "Windows XP Mode" to initial settings

Under Windows 7 64-bit ultimate edition, I've had the need to reset my "Windows XP Mode" to initial settings several times over the past few days. Initially I did this because as I used the XP virtual environment, the VHD file grew to around 10 Gig. Not huge, but I wasn't using it for anything except to run a client's 32-bit only VPN software, so it was wasting a fair amount of space. My main machine has a 256 Gig SSD for the main drive, so I am conservative with space consumption.


The second reason was that I was helping my fiancée (a high-school teacher) obtain some (public domain) video for use in her classroom. Unfortunately this video seemed only to be available in a heavily watermarked version on YouTube (ugh) or in a Real Media stream (double-ugh). So I wound up needing to use a mixture of open source and very old software to convert this video to a format that was playable in the classroom. As a rule I don't install software like that on my production machine - a virtual environment is a great "sandbox" for momentary needs like this one. After I converted this video, I no longer needed all these (rather buggy) utilities, so I wanted to start clean.


I didn't see much on the web on how to reset the "Windows XP Mode" to initial settings. I tried this experiment, which worked pretty well.


To reset Windows XP to factory new condition:

1. Right click the vmcx file. Select Settings. (On my machine the file is called Windows XP Mode.vmcx and is located in C:\Users\Tom\Virtual Machines)
2. Note the location of Hard Disk 1 (On my machine this location is called C:\Users\Tom\AppData\Local\Microsoft\Windows Virtual PC\Virtual Machines\Windows XP Mode.vhd)
3. Exit the Settings Dialog
4. Delete the files associated with your "Windows XP Mode" environment. On my machine, these are located in C:\Users\Tom\AppData\Local\Microsoft\Windows Virtual PC\Virtual Machines\Windows XP Mode.vhd and are called 
1. Windows XP Mode.vhd
2. Windows XP Mode.vmc
3. Windows XP Mode.vmc.vpcbackup
4. Windows XP Mode.vsv
5. Now, find the original Start Menu shortcut for Windows XP Mode. As long as you've left the Parent Disk in place, the system will prompt you to recreate a new environment:

voilà! - New XP environment (after a few other dialogs and a few minutes building)

Standard cautionary notes: 

• I haven't researched whether this is the "proper" way to do this. But I've done this multiple times on 2 different machines and it takes less than 10 minutes to reset, install anti-virus, and reinstall VPN software
• Obviously when I suggest you delete files on your system, I am assuming you know the implications of this and have everything backed up or have determined that you no longer need anything from the files you are deleting