I am having OSX ML 10.8.5 installed dual booting with windows 8 using clover efi boot loader disabling secure boot in bios in my ASUS S400CA.
1) When I tried to upgrade to mavericks, it downloaded and started installing and directed for reboot. After reboot, I got another menu item "install mavericks from Hackintosh "(drive where already ML is installed). I used that and it started hanging. With option -v in boot, I saw it stopped after line
Pthread support ABORTS when sync kernel primitives misused.
2) Then I tried making USB installer with unibeast. I could make it successfully. Unibeast USB stick could not be found in bios as a boot device.
How to go about it further.