Hi Folks, I'm having a very similar problem to that described by bnplz. I get to the installer no problem, but when I fire up disk utility I only see my thumb drive. I've followed all the advice here; reseating thumb drive, DFT'ing, lspci -nn (just returns the error 'Illegal Instruction: 4'(its definitely in E/E)) and patching IOATAFamily.kext (neither the ML or L (read some reports of it working with ML) were successful, in either S/L/E or E/E), but nothing seems to work. I have noticed that the CD drive is also not showing up, but that other USB drives do appear when I plug them in. Thought this might be something to do with the patched AppleACPIPlatform.kext (based on some discussion of this problem occuring with 10.9 installs), so I switched back to the default one, but again no luck.
I've kind of run out of ideas. Can anyone help?