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.

While Microsoft Windows 8 setup assistant utility provides and excellent way to download and create operating-system bootable installation media (CD/DVD/USB/ISO), it does not provide any means to use an existing .ISO file for creation of these bootable media options.

To create an bootable CD, DVD or USB setup disk from an previously downloaded and saved Windows 8 ISO file follow the steps demonstrated below.

SeaTools is a well known utility from popular HDD manufacturer Seagate, SeaTools free hard drive diagnostic software comes in two flavors one for DOS and other for Windows OS.

While both hard-disk diagnostic tools are excellent, they are different as SeaTools for DOS is more powerful because it is able to access the disks more directly and natively to diagnose the problem correctly. SeaTools for DOS is provided as a standard bootable .ISO CD disk image but since all modern computers support the easier bootable USB medium, here is how to get "SeaTools For DOS Bootable from a USB drive".

Seagate HDD Diagnostic Utility - SeaTools For DOS

System rescue disks come very handy in disastrous system recovery operations, based on latest Microsoft WinPE 3.0 bootable technology Wondershare Live Boot 2012 feature more than 40 rescue tools to rapidly rescue you from any imaginable PC crash disaster with a bootable CD/USB drive. Armed with tools to fix computer bootup problems, rescue data, backup and restore file/system, clone and deep wipe disk, manage disk, and over 40+ such rescue utility functions in total. The user-friendly interface simplifies the repair procedures into only a few clicks for both savvy users and newbees. The utility costs $59.95 to buy regularly but a 100% genuine and legal free activation serial number is available for grabs during next 4 days.

Creating and using a bootable USB rescue disk is a much faster, easier and smarter approach than a bootable cd/dvd, earlier we had shared a trick which allowed users to create a bootable USB disk with Kaspersky Rescue ISO, now Kaspersky has listened to the need and released an official bootable USB disk maker for Kaspersky Rescue Disk.

A "Bootable Anti-virus Rescue Disk" is a lifesaver when the computer is unable to boot normally or is unstable to such levels that disinfection is not possible because of virus activity, One of the best free bootable antivirus rescue disk "Kaspersky Rescue Disk" has now been made more powerful than ever - featuring not only the renowned powerful Kaspersky malware detection and disinfection engine with ability to update definitions but also a fully featured file-system explorer and a web-browser .

Links to download the latest version of Kaspersky Rescue Disk with a video demonstration of features and usage instructions is available below.

Virus's can get real nasty and make your Operating System unbootable, in such cases the user is left with only two choices either to format and re-install the operating system or to use a bootable anti-virus cleaner for removing the virus infection, obviously the second option is the preferred one, almost all major anti-virus companies provide bootable rescue disk's for removal of such stubborn virus infections, Kaspersky Rescue Disk is one of the best bootable anti-virus rescue disk out there with an fully functional option to download latest anti-virus definitions updates from internet, the free rescue disk GUI is similar to Kaspersky Anti-Virus 2009 allowing users to remove virus's and malware's via a familiar interface without booting into Windows.

If you don't have CD/DVD booting functionality or would prefer USB disk as the bootable medium, here is a simple step-by-step guide for creating bootable Kaspersky Rescue USB Disk: