Kaneda

I am having the same problem. I have an Optiplex 745 as well. 4GB RAM, E6600 2.13, ATI HD 4650 (all working in 10.6.8). I am unable to make the transition to mavericks after many tries. I was told I would only need a 2.5.1 IOATAFamily, but the reboot loops suggest more like the chipset (ICH8). Can someone help?

Could you please post a detailed guide? I have searched high and low and almost no-one posts an actual guide (links broken/depricated, half-descriptions of install process). I am reeling from buying this computer and having MyHack, iFail, and Vanilla installs all fail. The ICH8 is not recognized and all attempts at install end with reboot loop. Please help me understand how you got your 745 to install 10.9? I have 10.6.8 and I can't find the right kexts to load OSX.