The easiest way to download and install the latest Apple OS X 10.9 Mavericks OS upgrade is to simply visit the Mac Appstore from your Mac and click upgrade, however if you want to perform a clean installation (format the old setup and install fresh) you will need to create a bootable removable disk drive as shown ahead.

We will be using a simple to use GUI application named DiskMaker X to build a bootable disk drive from Mac OS X installation application downloaded from Apple Macstore (or any other source). As soon as you launch DiskMaker X, the application automatically finds the OS X Install program and proposes to build a DVD or create a bootable install disk as instructed below.

Malware infections can sometimes block anti-malware utilities or even make the computer unbootable, Microsoft has now came up with a free "Standalone System Sweeper" utility enabling users to get rid of those nasty infections allowing them to perform offline scans to remove viruses, trojans and rootkits effectively.

Microsoft Standalone System Sweeper allows users to download latest definitions and make a bootable CD, DVD, or USB stick which when booted from loads the Windows Preinstall Environment (Windows PE) to run the scan and clean infections.

Why settle for a single computer rescue bootable disk when we can have multiple tools on a single medium, thanks to free utilities like SARDU (Shardana Antivirus Rescue Disk Utility) - creating bootable rescue disk with all sorts of rescue tools becomes a matter of minutes.

SARDU enables usesr to prepare bootable CD/DVD or USB disks including a comprehensive collection of antivirus rescue disk's, utilities, Linux Live distros, and other popular Windows PE and recovery disks with ease.

Rescue Tools Multi Boot CD/DVD/USB Menu

Numerous tools and tips have been posted on this blog to create bootable disk drivers and here we have yet another simple utility to get the job done easily on Windows.

"Bootable USB Drive Creator Tool" does what it says by allowing users to create their USB disk-drives bootable using the straight-forward, minimalistic, self-explanatory user-interface.