[Bug 900245] Re: [12.04] Ubiquity/Partman do not re-use/detect FAT32 EFI partition

[YannUbuntu]

For information, resulting partitioning is:

sudo parted -s /dev/sda unit s print
Model: ATA VBOX HARDDISK (scsi)
Disk /dev/sda : 40853504s
Sectors size (logical/physical): 512B/512B
Partition Table : gpt

Number  Start      End        Size     FileSystem  Name  Flags
 1      34s        195346s    195313s    fat32                     boot
 2      195347s    12613631s  12418285s  ext4
 4      12613632s  12808944s  195313s    fat32                     boot
 5      12808945s  38759800s  25950856s  ext4
 3      38759801s  40853470s  2093670s   linux-swap(v1)

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https://bugs.launchpad.net/bugs/900245

Title:
  [12.04] Ubiquity/Partman do not re-use/detect FAT32 EFI partition

Status in “partman-auto” package in Ubuntu:
  Confirmed

Bug description:
  On Ubuntu 11.10 and 12.04 alpha

  On a EFI system which already contains a FAT32 EFI partition, when the
  user chooses "Install Ubuntu alongside them" (see attached screenshot)
  , Ubiquity will create another EFI partition, but will not use it.
  Instead it will use the first EFI partition detected on the disk.

  For example, if you install Ubuntu 11.04, then 11.10, then 12.04 alpha
  on a EFI system, you will find that 3 EFI partitions are created, but
  only the 1st EFI partition will be used (grubx64.efi will be updated
  each time). The 2 other EFI partitions will remain useless (empty).

  Remarks: 
  - if the user chooses "Something else" and creates a root (/) partition, Ubiquity will correctly detect and use the existing EFI partition.
  - if the EFI partition is FAT16, it will be correctly detected by Partman, and Ubiquity will correctly use it (and won't create additional EFI partition)

  (translated from French: http://forum.ubuntu-
  fr.org/viewtopic.php?pid=7332931#p7332931 )

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