A beautiful thing about Linux/OSS is that you can do whatever you want with your system. There are no arbitrary restrictions on how/how many times/where you install your OS. You are free to experiment as you see fit. Of course, you accept the risks and liabilities involved
I have only done some frugal installs, and only with Puppy or DSL, which were designed for it. VL is not, but you have proven that it can be done. Well done, keep at it.
For partitioning hard drives, try PartedMagic: http://partedmagic.com/