Did you try all the ordinary methods in internet and got stuck in the middle of the installation of OS X mountain lion? Don’t throw that DVD you burnt to the trash can. Let’s install the same DVD that you created previous with some additional help of a flash drive.
- Format your 8 GB flash drive using another working mac pc.(make sure to partition it to two, the 1st partition should be 4.8 Gigabytes )
- Restore the InstallESD.dmg file to the newly created partition of your flash drive.