All Macs come with a DVD drive that you can use, so in most situations, you won’t have the need for a USB installer disk. However, there can be times when your DVD ROM is spoilt and you need to reformat/upgrade your OS. This is where an USB installer disk comes in handy. In addition, with this USB disk, you can also use it to install Mac OS on a machine without CD-ROM (i.e netbook).

In this tutorial, we will go through the way to create a Snow Leopard USB installer disk.

Requirement

• An existing Mac with functional DVD-ROM
• Snow leopard installer DVD (upgrade set or box set)
• A USB thumb drive of at least 8GB in size

Previously, I have discussed the way to create a Windows 7 USB installer drive using the command prompt. Even though I have make it easy to follow, there are still some of you having some difficulty in the process. Recently, I have come across this little cool portable application that is able to do all the things covered in the previous tutorial in a breeze and without the command prompt.

The application that I am talking about is WinToFlash. This is a small application (only 2.1MB) that allows you to convert your Windows installer CD/DVD to a bootable USB drive. Not only is it easy to use (nearly idiot-proof and does not require you to have any technical knowledge), it is also fully portable – No installation is required and you can bring it wherever you are.