cobrat

You are correct, there's no AHCI HDD setting. Just "Normal" & "Legacy". I did mean the PCI-E card, sorry. And I did try -v, but the text rolled by too quickly before the sudden reboot back to the bios.

I have a Dell Optiplex 745 SFF with a 1.6 Ghz Core2Duo, 8 GB DDR2 800 RAM, and 500 GB HDD. I added an ATI 5450 PCI-X video card as the onboard video doesn't seem to be supported past Lion. Attempted to use myhack 3.3.1 and the OSX Mavericks source image downloaded this past January through USB flash drive. Upon booting from the USB drive with the myhack configured Mavericks installation, it would load for a bit before rebooting back to the BIOS. In the bios, I've tried setting it on Normal and Legacy. Same thing keeps happening. Is there anything I'm doing wrong or that I am overlooking?