BE EXTRA CAREFUL IN THIS PART. Lets do this step by step again. Once youve gotten in, navigate to the System Configuration menu. Look for the Boot Options or something similar to that. Install Linux From Usb Iso Installer' title='Install Linux From Usb Iso Installer' />Itll take you to another menu. Then go to Boot Order or Boot Priority BIOSes are all built different depending on your computers motherboard. Once youve found it, change the order of the system boot with USB Flash Drive or USB Disk Key or something similar on the very top of the list, meaning it should be the first in terms of boot priority. Check the BIOSs instructions on how to do so. Afterwards, save your changes and restart your computertake note some BIOSes boot straight into Windows after exiting, but dont worry, you dont have to go through it again, just restart from Windows. You will then be greeted by the Ubuntu Installer boot menu, wherein you should select the first option, Run Ubuntu from this USB. How To Eject Cd From Imac Manually Eject. After a few loading screensand some matrix style messages popping up youll be greeted by the Ubuntu desktop, and voila, you have successfully installed and ran Ubuntu from your very very awesome flash drive. You may now pat yourself at the back and gain a few bragging rights. Once youre done tripping around Ubuntu click the IO button on the upper right corner to see a menu from which you can shut down the computer. Then remove your flash drive afterwards. Now were done with the first part of the tutorial Congratulations Now, on to the part where we install portable apps on your flash drive Note The portable apps were talking about here are different from the apps you may have seen in Ubuntu, meaning these portable apps are actually programs you run in Windows, not Ubuntu. So if youre thinking Wait, so I gotta go through all that BIOS matrix stuff just so I can run a portable app think again. Ubuntu is just there for the purpose of say, your Windows OS borked on you and wont start. Using your flash drive, you can boot into Ubuntu instead of Windows and may have a chance to copy all your important files on a separate drive before completely re installing Windows or still be able to catch the girl you like online on Facebook through the Firefox app within Ubuntu.