Hi, I am running a 10.4.11 with a Windows XP virtual machine. I wanted to use an external hard drive which I wanted to cross use between windows and mac operating systems. I was unsure of whether I should partition my hard drive into fat32 and HFS for use between Windows and OS X machines and if I was to partition it then would I have to use the Fat32 partition for my Windows Virtual Machine since it's not really running on a partition on the actual hard drive. I used to have my Windows OS on a partition using BootCamp and I used my Hard Drive to transfer files between the two systems, it all worked fine until something went horribly wrong with my hard drive and I was told that this was due to the fact that I hadn't partitioned my Hard Drive for the two operating systems. thanks for the help.