If you are dual booting Windows 8 with Windows 7, you might find entering Safe Mode a bit tricky with Shift + F8. You have to Run msconfig.exe, tick the Safe Boot option and then restart to get the Safe boot along with your Dual boot options.
But you don’t need tho do this. The Safe Mode option is already present inside various other options. Let use see where it is!
Via Frédéric DEBAILLEUL