While I'm searching using google right now, i wanted to know if anyone has tried this rather stupid feat. I need to create a Xubuntu machine on which i will be installing Virtual Box of Java to create and run an XP machine for malware research purposes.

I use windows 7 business as primary operating system and i don't want to install Xubuntu as a secondary operating system primary reason being my HDD space. I'm running short on all partitions.

Hence the act of installing a virtual machine inside virtual machine which i can install on my external HDD.

Thank you