Comment 122 for bug 1265192

I've made a few tests with the ubiquity installer in trusty-proposed in Virtualbox (EFI mode not enabled).

* First I installed Windows 8 and left around 30 GB free.
* Then I installed Ubuntu to the free space using the automatic partitioning. All good! Windows was still there.
* Then I reinstalled Ubuntu. All good!
* After reboot, I ran the installer again to see what the "erase entire disk" option would do. The confirmation dialog reported that partitions 1 and 5 would be formatted, as expected (I didn't proceed).
* Then I went back and used manual partitioning to reinstall Ubuntu again. When making the first change, a message informed me that "the changes must be written to disk before continuing". That message is a bit alarming, but the installation worked correctly.
* Then I booted a Kubuntu live session to test the KDE frontend. This frontend didn't offer an option to replace Ubuntu with Kubuntu. It only had options to resize the Windows partition and install there, and to use the whole disk. So I used the manual partitioning. The confirmation dialog was displayed in this frontend too.
ubiquity-frontend-kde is in the "universe" repository, so it's not officially supported by Canonical, but I wanted to test it too.
* Finally, I formatted the Windows partitions with GParted and added a few files to them, then ran the installer to replace Kubuntu with Ubuntu (automatic partitioning). Everything worked as intended.
There was also an option to install Ubuntu alongside Kubuntu (by resizing one of the formatted Windows partitions). I tried it later: the confirmation dialog didn't mention those partitions being formatted. Then, during the installation I mounted those partitions (using "mount") and, as expected, they weren't formatted (I didn't have the time to finish the installation). So it seems to have worked correctly.

The confirmation dialog was always displayed (including after the manual partitioning).

Every time before running the installer, I enabled trusty-proposed and upgraded 3 packages: ubiquity, ubiquity-frontend-gtk, ubiquity-ubuntu-artwork (I wrote these names from memory).
I also wanted to see if ubiquity would detect an hibernated Windows 8 partition, but I couldn't find the option to enable it in Windows 8 (maybe it's not supported inside Virtualbox).

ubiquity 2.18.8.3 seems to be working correctly from these not very extensive tests in Virtualbox.

However, I haven't added the verification-done tag yet.
It would be great if someone else also tested this. Better yet if the tests could be done on a real UEFI testing machine.
But note that, according to https://wiki.ubuntu.com/TrustyTahr/ReleaseSchedule, 14.04.2 will be released on February 5th. The new version of ubiquity should be tested and "approved" before then.