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I have windows 7 and Ubuntu 10.4 on my Lenovo G580. I want to upgrade my Ubuntu to 12.04 without removing windows is it possible?

Just to add WIFI/LAN do not work with Ubuntu 10.4 on my laptop due to driver issues.

How to do it?

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Use Unetbootin to burn the Ubuntu 12.04 image to a USB pen. Boot from the pen and click on the install icon. Choose Upgrade Ubuntu, instead of Install and the other options. In the mean time, you might want to follow the instructions from this Question:… It will provide you with drivers for your laptop's wireless card. – David M. Sousa Jun 14 '13 at 17:39
possible duplicated: – Lucio Jun 14 '13 at 17:59
up vote 2 down vote accepted
  1. Download the ubuntu 12.04 from the Ubuntu web site.
  2. Create a bootable USB.
  3. boot from the USB.
  4. Choose "upgrade Ubuntu 10.04 to 12.04" in the selection menu as shown in The answer you've linked.

Please comment if you need more instructions and if you have any questions, Good luck!

share|improve this answer
Can you please elaborate step 3. How to upgrade 10.04 after booting from USB. Thanks ! – nav_jan Jun 14 '13 at 19:09… explains point no. 3 in detail thanks. – nav_jan Jun 14 '13 at 19:10
@nav_jan in the picture shown here (it's the installer window) choose upgrade. So, boot from the USB, choose install Ubuntu and then select upgrade in the menu instead. :) – Alvar Jun 14 '13 at 22:57

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