Let me explain the suituation:
I received a vhd file (14 gb) for using with virtual pc 2007 (windows xp host) and the performance under my laptop was always awful and the memory consumption, terrible.
I decided to install ubuntu 8.10 in another partition and try virtualboxOSE 2.04. It worked very well with the virtualpc image, the memory consumption was much less and the performance, almost flawless.
The only drawback was the lacking of sound and display driver (I knew that after installing the additions the issue is solved, but, the automatic update did not work)
I said, well, let's try another version, so I downloaded VirtualBox 2.1 (not OSE) and removed all the previous packages from the older version.
Upon running the program for the first time, I made a new VM, installed winxp and then downloaded the additions. All the drivers fine, performance excellent.
It was time to try my virtualpc image and after opening it, it asked me to update some configuration files. That was the end of my vhd file.
Everytime I try to run this VM, It gives me an error message saying that the hard drive file is invalid. I tried with virtualpc, virtualbox/OSE and the error message is the same.same problem.
I'll be very thankful if anyone here knows the answer to my problem
