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Having installed Ubuntu 13.04 I've downloaded Ubuntu 13.10 ISO to upgrade from it. This answer doesn't work because there is no cdromupgrade file in the mounted ISO disk.

How can I upgrade 13.04 to 13.10 using the ISO image or CD/DVD media?

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is it absolutely necessary for you to upgrade via the iso? the software centre provides a decent and safe manner of upgrading without ruining your existing installation –  Projjol Nov 2 '13 at 7:17
Actually my internet connection is not stable and it may be disconnected in the middle of the process. But I got the ISO using a download manager. –  A. Karimi Nov 2 '13 at 7:20
More over it would be very useful for enterprises which may have more than one instance of Ubuntu to upgrade. –  A. Karimi Nov 2 '13 at 7:23
Does this help? askubuntu.com/questions/340156/… –  Mitch Nov 2 '13 at 10:01
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1 Answer

up vote 1 down vote accepted

Okay, so since cdromupgrade file is missing or not available, the next best thing is to create a LiveUSB and go on from there. Since you're upgrading from 13.04 the entire process should be rather flawless.

  1. Open the Dash and open the *Create Startup Disk * option. This opens a window, from where you can choose the iso file and destination.
  2. Now select the 13.10 iso file and a usb (remember to use the erase disk option before you mount the image) and create your startup disk.
  3. Now, upon re-booting you should boot directly into the USB. Select the install Ubuntu 13.10 option.
  4. The installer window would present a number of options to you depending on the other OSes present in your hard drive.
  5. Choose the Upgrade to 13.10 option. This should get you going and ready for 13.10.

Hope this helps you.

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I got org.freedesktop.UDisks.Error.Inhibited: Daemon is inhibited error when I want to erase the usb drive. –  A. Karimi Nov 2 '13 at 9:17
is it mounted? please make sure that it is not mounted. –  Projjol Nov 2 '13 at 13:24
I'm commenting from 13.10 thanks for your help but I think using the software updater would be better. –  A. Karimi Nov 2 '13 at 17:32
It would be, the system is designed to handle all sorts of dependencies. But as long as you have a clean install of 13.10, its okay. Have fun using 13.10! :) –  Projjol Nov 3 '13 at 4:40
Good to see that the LiveUSB worked for you @A.Karimi. It did for me too, because I had similar issues with having a stable internet connection. Also, it will prove to be useful, as you rightly suggest, for installation on multiple systems. –  Ninad Nov 15 '13 at 6:33
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