This post is written by Rajesh Pandey who is a tech enthusiast and loves to talk about hardware stuff.
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Recently, Ubuntu 8.10 Intrepid Ibex was launched and it has one useful feature and that is to create a USB Startup Disk of Ubuntu via which you can boot into Ubuntu on any PC. This feature can come in very handy in emergency situations, you can just plugin the pen drive and boot into Ubuntu. The live system of Ubuntu is a full fledged Operating system just that it’s running on RAM. It has Pidgin for all your IM needs, OpenOffice for your Office work and Firefox for your browsing needs. Since the live system of Ubuntu from the RAM, the more the RAM on the PC you use it, the better will be its performance. The first thing you need to do to create an Ubuntu USB startup disk is to download Ubuntu ISO from ubuntu.com/download. After that burn the ISO on a Blank CD, boot via the Live CD and then go to System–>Administration–>Create a USB Startup Disk.
As you can see from the above screenshot, first you need to point the Application to the Ubuntu iso and then you need to insert the pen drive. You can reserve some space on the pen drive so that you can save your documents and settings on the pen drive itself. Here I am using a 1GB Pen drive and it’s just fine, but I would recommend you to use a 2 GB one. After that just click on Make Startup Disk and then the application itself will do the job for you. Depending on the speed of your Pen drive the USB startup disk will be created. Then using the pen drive you can boot into the live system of Ubuntu and if you had used the option to save the documents and settings on the reserved space you can save your documents and edit them later on, when you boot again from the pen drive!
P.S.-Do keep in mind that the boot-up from the pen drive will be quite slow and will depend on the speed of your pen drive as well.