I have an external hard drive which I have been using to do System Image Backup once a week on my Windows 7 computer. The backup goes to WindowsImageBackup folder. Now, I have another computer with Windows 8 Pro. I did a system image backup to the same ext. hdd. It went to the same folder, thereby erasing the Win 7 backup. I see no way I can tell the image backup to go to a different folder. So, my question : I suppose I'll have to buy another external hdd for the Win 8 Pro. Yes?