With Lenovo notebooks and SSD, Synaptics Thinkpad UltraNav Driver makes a boot-delay about 20 seconds. Uninstall it to boot faster. With Synaptics Driver: BootTime 46871 MainPathBootTime 26471 OtherLogonInitActivityDuration 20913 Without Synaptics Driver: BootTime 24348 MainPathBootTime 5848 OtherLogonInitActivityDuration 901 Successfuly tried on Lenovo Thinkpad X220 and Thinkpad E520.