Sandy Bridge

Intel Second Generation CPU 2xxxM HD3000 Graphics

Lion 10.7.1 On Lenovo G770 i5 Sandy Bridge HD3000 Laptop

And always use portable drive to install before internal hard drive. For Realtek id 0139 card reader isn’t supported, a USB SD card reader is handy. 2012-04-05 The new and easier way to install Lion 10.7.3 is here. After weeks of trials and errors, with tons of readings and editings, I got the Lion 10.7.1