Hi All, Wonder if anyone could help with this. So I'm trying to install Mountain Lion GM on my iMAC however I get the following error about the target location. Off I go to the disk utility but I can't change the MBR type. Seems the only way to go is with a clean install. No problem I think, stuff is all backed up. Into disk utility and I try to restore the Mountain Lion DMG to a USB stick but I get invalid argument (im not even sure if restoring a dmg to a usb key would work) So at this point I can't format to get things to GUID and unable to create a boot able usb mountain lion usb key (unless I've missed something on the web) Please tell me there has to be a better way than looking for my Snow Leopard disks, running disk utility there, formatting drives, installing SL and THEN mountain lion?