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I downloaded what I thought was a trial version of 12.04 (booted via USB) some days ago.

At that time there was an icon on the desktop inviting me to install Ubuntu. Unfortunately that icon appears to have vanished.

So is there a way to check whether I've installed the full program?

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    trial version? as opposed to what? full version? paid version? Linux is always free, so whatever you installed, it's not ubuntu, can you tell us from where did you obtained your trial version? you seemed to have installed some software, ubuntu cant be installed on windows the way you described it
    – Lynob
    Apr 2, 2014 at 16:06
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    I think that the OP meant a "Live" version.
    – Lekensteyn
    Apr 2, 2014 at 16:24
  • Did u use something called wubi?
    – blade19899
    Apr 2, 2014 at 16:34
  • @blade19899 apparently not, he says "booted via usb".
    – guntbert
    Apr 2, 2014 at 18:24

3 Answers 3

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Simple enough. Does your computer boot into Ubuntu without the usb drive inserted? Yes ==> installed. No ==> (probably) not installed.

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  • doesn't always work, sometimes, especially when you're dualbooted, the system boots into windows because grub isn't well configured, happened to me many times
    – Lynob
    Apr 2, 2014 at 16:09
  • hence the "probably". When it DOES boot, it is unequivocally installed.
    – Gx1sptDTDa
    Apr 2, 2014 at 16:12
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    Ubuntu booted with usb removed so I take it that means it's definitely installed. Thanks.
    – user264614
    Apr 2, 2014 at 21:09
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Run the below command on terminal.

lsblk | awk '$7=="/" {print $0}'

If it produces any output then you are in an installed Ubuntu system or otherwise Ubuntu is not installed on your disk(You're in an Ubuntu live disk ).

For Ubuntu live disk, the mountpoint would be /cdrom or something else.But for installed Ubuntu, the mount point should be /

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Firstly, Ubuntu is an operating system. Not a program.

Although it is not easy to say by the information you are providing, I would suppose that you are currently using some version of windows. I would be surprised if you have indeed installed Ubuntu without realizing - what may have happened is that you may have booted up a "Live" Ubuntu, which is when you run Ubuntu from a DVD or USB stick.

You can also check your hard drives through "My Computer" and check if there are any drives with files that you do not recognize.

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  • Good point. - I edited my comment above.
    – schizomorph
    Apr 2, 2014 at 18:32

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