[Bug 1439060] Re: Ubuntu 14.04.2 installer manual partitioning

[Colin Watson]

** Project changed: debian-installer => debian-installer (Ubuntu)

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Title:
  Ubuntu 14.04.2 installer manual partitioning

Status in debian-installer package in Ubuntu:
  New

Bug description:
  i'm trying to install Ubuntu 14.04.2 on Power8 Hardware. I'm having some trouble with manually
  partitioning the disk, the error occurs on hardware and also with
  powerkvm. It could be related to [1]

  My Partition layout:

  Partition	Size	Type
  sda1			29MB	PowerPC PReP
  sda2			256MB	ext4		/boot
  sda3			10G	LVM

  Volume Group: VG01_mariadb01

  Volume	Size	Type
  ROOT	4G	ext4	/
  VAR	4G	ext4	/var
  SWAP	swap	

  When i select "Finish partitioning and write changes to disk"

  I get this error:

  ------------------------------------------------------------------------
  The file system on /dev/sda1 assigned to / has not been marked for
  formatting. Directories containing system files
  (/etc, /lib, /usr, /var, ...) that already exist under any defined
  mountpoint will be deleted during the install.

  Please ensure that you have backed up any critical data before
  installing.

  Do you want to return to the partitioner?

  <Go Back>				<Yes>	<No>
  ------------------------------------------------------------------------

  I select No because there is no data on /dev/sda1, /dev/sda1 is the
  PReP Partition. After that, i get another error:

  -------------------------------------------------------------------------
  Failed to delete conflicting files

  The installer needs to remove operating system files from the install
  target, but was unable to do so. The install cannot continue
  -------------------------------------------------------------------------

  There is no data on /dev/sda1 i did overwrite all data on it with dd
  for one try. 

  Ubuntu works with automatic partitioning.

  If i answer <Go Back> to the Question and then delete and re create
  the PReP Partition, the installation does work.

  
  [1] https://bugs.launchpad.net/ubuntu/+source/curtin/+bug/1371133

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