For computer technician, having the bootable Live USB thumb drive is crucial, in order to perform troubleshooting on the computer which is not equipped with CD / DVD drive, eg: netbook.
Now, I would like to introduce you the free software that you can use to create the bootable Live USB easily. It is the UNetbootin
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This is the software which can ease yourself to find many distribution files that you need to use for computer troubleshooting especially when it unable to boot. Besides, it is portable software that only need double click to launch.
When you launch the program, you will see the default interface below which have two radio buttons that represent Distribution and Diskimage.
To select the distribution files to troubleshoot the computer’s problem, click the drop down menu of Select Distribution and Select Version. Then you will be redirected to URL which the distribution files is located. Click that URL to download the distribution files
After the download process finish, impale the empty USB thumb drive (with FAT32 file system) into computer’s USB port. Click radio button Diskimage. Click button to browse the distribution files (.ISO) that you have downloaded. Click OK and let the program make the bootable Live USB for you.
After the process finish, click button Reboot Now. Do not pull out the USB thumb drive yet. Let the computer boot through your thumb drive to see either it work or not.