I get the same message, and I have:

d-i partman/unmount_active boolean false

My case: 
I have a 2nd usb stick with ubuntu-16.04.2-server-amd64.iso
the installer mounts it under /cdrom, and then asks me if I want to unmount it 
so it can step on it.  
perhaps this should be a special case?

Anyway, I wonder what the relation is between unmount_active and
 "Do you want the installer to try to unmount...?"

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1628659

Title:
  "d-i partman/unmount_active boolean true" not working

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/preseed/+bug/1628659/+subscriptions

-- 
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to