I installed XP and then a few months later Windows 7.. I have no need for XP and want to delete it. if I follow the process to delete will it remove any needed files for Windows or are the partitions truly separate.
Basically there are separate images for each VM hard disk. In some custom setups you could use hard disk drive of one of VMs in another to have access to it's data. To make me sure - please send Problem Report (http://kb.parallels.com/en/9058) from both of your Virtual Machines and post Reports' IDs here.