I have some type of hardware issue (video card I think) where my system will lock up. It's random, sometimes once a day other times once a month. doesnt matter if it's running windows or OS X.
since upgrading to Yosemite it won't boot up if my system crashes (Mavericks and chimera it would...
Just upgraded to Yosemite. Everything work fine when I boot with -f.
When I boot in -v. I get VoodooPS2Mouse Version 1.8.11 loaded... Still waiting on root device..
It won't go past that point.
When I add flag -f everything works fine.