I get this error when trying to "Erase Disk" on Startup Disk Creator.

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(Click image to enlarge)

org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/dbus/service.py", line 707, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/share/usb-creator/usb-creator-helper", line 250, in Format
    partition = table.call_create_partition_sync(0, size, '0x0c', '', no_options, None)
AttributeError: 'NoneType' object has no attribute 'call_create_partition_sync'

Look at the color differences in the Make Startup Disk window. Everything below the "Erase Disk" button / "Disk to use" section is gray (buttons plus slider are disabled, so I can't change either of them).

  1. What is this error message trying to say me?

  2. What should I do to get rid of this error/problem? I need clear detailed instructions because I'm a newbie to the Ubuntu world!

  • Bugs in Ubuntu's core packages should be reported on Launchpad. As a workaround, you can try to erase/format the USB drive with the "Disks" program, before you use the Startup Disk Creator. – David Foerster Feb 11 '16 at 11:10

The Startup Disk Creator tool is known to having some issues.
Use the Disks tool to create the Ubuntu installation media properly.

Open Disks, select Restore Disk Image from the menu on the top right of the application.
Choose the Ubuntu installation ISO file and the USB drive to write it to - then start restoring.

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| improve this answer | |
  • 1
    It is a good idea to include screenshots for the instructions. :) – userDepth Feb 11 '16 at 11:19
  • 1
    Nice!! XD I think this method could take USB-Creator out of the game. – userDepth Feb 11 '16 at 12:26
  • Yes it's totally reliable. Now that we are talking about it I think I will use it with Xenial. A fresh install then all my setups and software I use and a disk backup image and boom if I need to reinstall everything is done without internet connection required. – userDepth Feb 11 '16 at 12:51
  • How do I find the Disks tool in 15.10? – mango Apr 16 '16 at 7:33

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