How long am I going to have to wait for this to finish installing?

  • Probably related: askubuntu.com/questions/774920/… – muru May 20 '16 at 2:23
  • Yup, experiencing the same problem here. – edwinksl May 20 '16 at 2:45
  • same issue here. after a few trials or restarting, the installation was complete but it could not restart shows error: blk_update_request: I/O error, dev sr0, sector ......bla bla and a dozen other similar errors – adnan_pk May 20 '16 at 7:59

You might try disabling networking and restarting the installation.

I experienced the same problem you described while installing Ubuntu Desktop 16.04 LTS (64-bit) in Hyper-V under Windows 10. The installation got to "Retrieving file 56 of 56" and nothing further happened.

The solution for me was to temporarily disable networking. Since I was installing in Hyper-V, it was just a matter of stopping the VM, disabling networking in Hyper-V Manager's Settings, and restarting the VM. Upon restarting, the Ubuntu installer detected an existing copy of Ubuntu 16.04 LTS as being installed (from the prior unfinished attempt), and I selected the option to erase the existing instance of the OS and re-install it. This time the installer successfully completed the installation, ending with the expected message that the system must be restarted. I turned networking back on in Hyper-V Manager settings and restarted. A fully working copy of Ubuntu is now up and running for me. Hope this helps.


I had the exact problem while working on a dual boot Windows 7 / Ubuntu Desktop 16.04 LTS (64-bit) installation. I also resolved the issue by disabling my internet connection and redoing the install. I think it might have been because I had the option to "check for updates during installation" checked. when I re-ran the installation (overwriting the prior unfinished installation that the installer detected) without that update box checked, it worked just fine.


I was trying a complete install on a desktop. After reading the previous posts I unplugged the network cable from the machine, which prevented me from selecting the check for updates box. The install went smoothly after that.

protected by Community May 20 '16 at 14:43

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