[Bug 1249564] Re: 13.10 installer doesn't see pre-installed Windows 8.1

[Gordon Burgess-Parker]

Now getting the same result in 14.04 - the installer doesn't recognise that Windows 8.1 Update 1 is installed.
Was this tested?

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Title:
  13.10 installer doesn't see pre-installed Windows 8.1

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  Lenovo U410 - Windows 8.1 pre-installed, i3 proccesor, 8GB RAM, 500GB
  HDD with 210 GB free for Ubuntu install.

  Using Live USB drive to install, 13.04 sees the Windows partitions, (but doesn't mount them). The installer sees the Windows 8.1 installation and asks whether I want to install side by side or replace Windows.
  13.10 run from a live USB however, sees the Windows partitions and can mount them, but the installer doesn't see the  Windows OS at all - it just says "No OS found".

  Update - installed 13.04 as dual-boot with Windows 8.1 - Grub shows an
  entry for Windows Bootloader. Upgraded to 13.10 - Windows Bootloader
  entry disappears from Grub.

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