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

If you have previously dualboot your Windows 7 and Vista and now you wanted to remove it, either because you don’t like it or you are running out of hard disk space, here is the way to do it:

Updated: An updated version of this tutorial can be found here, featuring an easier and faster way to create a Windows 7 USB installer drive.

The Windows 7 beta has been released for quite a while now. If you want to follow the crowd and test it in your system, but do not want to burn into a DVD, here is how you can create a bootable USB drive to install Windows 7 on your system.