[Bug 1707857] Re: Installer fails on UEFI-based system with multiple bootable drives

[Simon Quigley]

** Changed in: ubiquity (Ubuntu)
       Status: New => Won't Fix

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Title:
  Installer fails on UEFI-based system with multiple bootable drives

Status in ubiquity package in Ubuntu:
  Won't Fix

Bug description:
  Release: Ubuntu 17.10 (Development Release)

  Version: 17.10.2

  What you expected to happen:

  The installer should be able to automatically select the correct EFI
  partition when starting installation on systems with more than one
  bootable disks

  What happened instead:

  I was attempting install Artful over an existing Xubuntu 17.04
  installation using the Upgrade option in the ubiquity installer, the
  installation fails to start with the error "Two file systems are
  assigned the same mount point (/boot/efi)", attempting to select the
  partitions manually in "Something else" afterwards crashes ubi-partman
  (exit code 141, syslog attached in report) and ubiquity becomes
  completely unresponsive and has to be manually killed. Disabling the
  Windows boot drive (sdc) in BIOS allows the installation to proceed
  normally.

  "fdisk -l" output of the affected system:

  Disk /dev/loop0: 1.5 GiB, 1626501120 bytes, 3176760 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 512 bytes
  I/O size (minimum/optimal): 512 bytes / 512 bytes

  Disk /dev/sda: 238.5 GiB, 256060514304 bytes, 500118192 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 512 bytes
  I/O size (minimum/optimal): 512 bytes / 512 bytes
  Disklabel type: gpt
  Disk identifier: FE5795C7-2E48-4578-B58C-296F100387EE

  Device         Start       End   Sectors   Size Type
  /dev/sda1       2048    391167    389120   190M EFI System
  /dev/sda2     391168  42334207  41943040    20G Linux filesystem
  /dev/sda3   42334208 491728895 449394688 214.3G Linux filesystem
  /dev/sda4  491728896 500117503   8388608     4G Linux swap

  Disk /dev/sdb: 298.1 GiB, 320071851520 bytes, 625140335 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 512 bytes
  I/O size (minimum/optimal): 512 bytes / 512 bytes
  Disklabel type: dos
  Disk identifier: 0x1dd51f00

  Device     Boot Start       End   Sectors   Size Id Type
  /dev/sdb1        2048 625139711 625137664 298.1G  7 HPFS/NTFS/exFAT

  Disk /dev/sdc: 447.1 GiB, 480103981056 bytes, 937703088 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 512 bytes
  I/O size (minimum/optimal): 512 bytes / 512 bytes
  Disklabel type: gpt
  Disk identifier: E4DB5475-7E96-4731-AB56-A66279798905

  Device       Start       End   Sectors   Size Type
  /dev/sdc1     2048    923647    921600   450M Windows recovery environment
  /dev/sdc2   923648   1128447    204800   100M EFI System
  /dev/sdc3  1128448   1161215     32768    16M Microsoft reserved
  /dev/sdc4  1161216 937701375 936540160 446.6G Microsoft basic data

  Disk /dev/sdf: 29.8 GiB, 32015679488 bytes, 62530624 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 512 bytes
  I/O size (minimum/optimal): 512 bytes / 512 bytes
  Disklabel type: dos
  Disk identifier: 0x0121d321

  Device     Boot Start      End  Sectors  Size Id Type
  /dev/sdf1  *     2048 62530623 62528576 29.8G  c W95 FAT32 (LBA)

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