I have both Windows XP and OSX (default) dual booting - both which worked flawlessly for weeks (press F8 to switch between each).
After installing Kaspersky AntiVirus in Windows, booting into OSX right after now gets me the no entry symbol during the grey boot up screen. Windows still boots up fine.
It can't be random, did the antivirus program kill my osx? Is it even possible? and how to fix?