I just shifted from Windows to Mac OS X with my new MacBook Pro. I also bought a Western Digital external hard drive which I was able to set-up well for my MAC. But when I tried using it on my old laptop running Vista, it doesn't work well. I learned that I have to set it up to work on Vista but it will also erase all the files I already have in it.
Is it possible to partition the disk to work on both MAC and Windows?