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I want to run Ubuntu via usb without installing it to my hard disk.

How do I install additional drivers, and all my aps related to ubuntu in usb?

How do I get back up of all the softwares which I installed during my first run. so i can use those softwares in all the system via usb live?

I need to use that additional software on other computer with ubuntu via usb live?

Please give me solutions for this. I am a new linux user. Please give me a all procedures for this. I am not good in ubuntu.

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marked as duplicate by Alvar, Tom Brossman, Jorge Castro, Kevin Bowen, Eric Carvalho Jul 27 '13 at 1:22

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Just install Ubuntu as usual and choose USB as target. You will be able to do everything that normal Ubuntu can. –  Danatela Jul 26 '13 at 6:50
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Take a look at LiveCD/Persistence. –  Mitch Jul 26 '13 at 9:01
    
I've tried this and it runs incredibly slowly. Be prepared for very poor performance, especially if you are running it from a USB 'thumb drive'. See this question for one way to speed things up. –  Tom Brossman Jul 26 '13 at 16:10

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