I updated 10.9 to 10.9.4 today. After installing update it started boot looping, it shows apple logo on boot and then restart immediately. I installed BootDiskUtility on USB:
When i boot with BootDiskUtility, it boots correctly and everything is fine. I tried to install Clover, Chimera and Chameleon but clover shows only black screen and chameleon and chimera is boot looping.
What to do? When i boot from BootDiskUtility USB, it boots correctly.
My PC specs:
Asrock Fatal1ty H87 Performance
Intel Xeon E3 1231 V3
AMD Radeon R9 280
I needed to use xpcm-free flag on first install.