[Bug 769669] Re: Installer should not format an existing EFI System Partition

[FlyingMG]

I just installed Win 7 EN 64bit and then tried to install ubuntu 11.04 as a second system.
After rebooting the system, I only get a blinking dash.
I could arrange to access Grub2 and boot either the installed win7 or ubuntu by inserting te win7 installation CD and at the prompt if I want to boot/load from it, removing the CD again... Then Grub2 is loading and I am able either to loaf win 7 or ubuntu 11.04.
I assume this bug is the one, that killed my dual installation.

(Is there meanwhile any solution for that problem ?
Would it be a solution to first install ubuntu 10.04 or 10.10 and then upgrade to 11.04 from there ?)

Is there any forum topic open to that question ?

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https://bugs.launchpad.net/bugs/769669

Title:
  Installer should not format an existing EFI System Partition

Status in “partman-efi” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: partman-efi

  When selecting an EFI partition under parted during ubiquity install
  on 11.04, there is no option to select mount point.  As windows 7 had
  installed an EFI partition at /dev/sda1 formatted to NTFS, I selected
  that.  I did not select that it should format the mount point, but it
  did anyway to FAT16 and deleted the windows bootloader.  Update-grub
  does not find windows, and I had to go to great lengths to reinstall
  the bootloader to the same partition as windows, it is still missing
  from /dev/sda.

  I had expected that even if /dev/sda1 was formatted, it would at least
  preserve the existing bootloader instead of putting me in a position
  where I had to use a windows recovery disk for several hours until I
  can now at least boot to windows using the bios, but grub is still
  unaware of the windows install.  I expected windows to overwrite grub,
  but I didn't expect installing linux to break my windows install.

  I encountered this bug after having the problems in this bug:
  https://bugs.launchpad.net/bugs/765270.

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