«Hackboot 1» is for starting the Mountain Lion installer, while «Hackboot» 2 is for starting Mountain Lion itself. There are three different versions of Hackboot we’ll need to use two of them in this guide. To help Mountain Lion start, you’ll need to use Olarila’s Hackboot CD. Hackboot 1 / Hackboot 2: Even though it’s called a «bootable DVD», the Olarila version of OS X Mountain Lion still can’t boot in Virtualbox by itself.In the past, we’ve used the iAtkos distro for this, but iAtkos hasn’t updated for Mountain Lion yet, so I used the «OS X 10.8 Mountain Lion bootable DVD for Intel PCs», by Olarila. I won’t go into details, but you can download these copies from about any bittorrent website by using a bittorrent client (it’s about 4.5 GB in size). Instead, you’ll have to rely on pirated «bootable DVD» copies of Mountain Lion, also known as «distros». Mountain Lion bootable DVD : Unfortunately, the standard method for installing OS X Mountain Lion on PCs (which uses a paid copy of the Mountain Lion installer) doesn’t work with Virtualbox.Virtualbox : This virtualization suite is free, and though it doesn’t offer official support for Mac OS X, it works well enough.Thank you for using Apple Support Communities. Click Continue and follow the onscreen instructions to reinstall OS X.If you’re not connected to the Internet, choose a network from the Wi-Fi menu.

After the drive is erased, close the Disk Utility window.

Type a name for your disk, then click Erase.

From the Format pop-up menu, select Mac OS Extended (Journaled).

If you want to securely erase the drive, click Security Options.

Select the indented volume name of your startup disk from the left side of the Disk Utility window, then click the Erase tab.

When the Recovery window appears, select Disk Utility then click Continue.

Immediately hold down the Command (⌘) and R keys after you hear the startup sound to start up in OS X Recovery. Before you begin, make sure your Mac is connected to the Internet.This section of the following article will help you get that drive erased and formatted properly so you can continue with the installation: That indicates to me that the drive has not yet been formatted as Mac OS Extended Journaled, so it is not ready for Lion to install onto it. From what you describe it sounds like you are trying to install Lion on your newly installed HDD replacement but its not showing as a disk when you try to actually install Mac OS X.

Os x mountain lion installer