[Bug 1396506] [NEW] Ubuntu Server installer does not mount /cdrom for preseeding

[Michael Yoo]

Public bug reported:

When trying to use preseeding, the loading of preseeding file fails due
to the /cdrom directory not being mounted.

First when I try to install, no error message is shown and installation
progresses as normal. However, if I explicitly select the menu option
"Load debconf preconfiguration file", I am shown the error message
"Failed to retrieve the preconfiguration file: The file needed for
preconfiguration could not be retrieved from file:///cdrom/preseed
/ubuntu-server.seed. The installation will proceed in non-automated
mode."

This bug makes it impossible to use any other preconfiguration seed
file, as the same bug happens with other preconfiguration modes/files.

A video of reproduction can be found in the attachments.

If I mount the /cdrom folder manually using "mount -t iso9660 /dev/sr0
/cdrom", I can load the preconfiguration file correctly.

This is on ubuntu-14.04-server-amd64.iso, verified by md5 hash and
integrity verified inside installer as shown in the video.

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "A video of the bug being reproduced."
   https://bugs.launchpad.net/bugs/1396506/+attachment/4268819/+files/preseed-bug-demonstration.mp4

** Description changed:

  When trying to use preseeding, the loading of preseeding file fails due
  to the /cdrom directory not being mounted.
  
  First when I try to install, no error message is shown and installation
  progresses as normal. However, if I explicitly select the menu option
  "Load debconf preconfiguration file", I am shown the error message
  "Failed to retrieve the preconfiguration file: The file needed for
  preconfiguration could not be retrieved from file:///cdrom/preseed
  /ubuntu-server.seed. The installation will proceed in non-automated
  mode."
  
  This bug makes it impossible to use any other preconfiguration seed
  file, as the same bug happens with other preconfiguration modes/files.
  
  A video of reproduction can be found in the attachments.
  
  If I mount the /cdrom folder manually using "mount -t iso9660 /dev/sr0
  /cdrom", I can load the preconfiguration file correctly.
+ 
+ This is on ubuntu-14.04-server-amd64.iso, verified by md5 hash and
+ integrity verified inside installer as shown in the video.

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https://bugs.launchpad.net/bugs/1396506

Title:
  Ubuntu Server installer does not mount /cdrom for preseeding

Status in “debian-installer” package in Ubuntu:
  New

Bug description:
  When trying to use preseeding, the loading of preseeding file fails
  due to the /cdrom directory not being mounted.

  First when I try to install, no error message is shown and
  installation progresses as normal. However, if I explicitly select the
  menu option "Load debconf preconfiguration file", I am shown the error
  message "Failed to retrieve the preconfiguration file: The file needed
  for preconfiguration could not be retrieved from file:///cdrom/preseed
  /ubuntu-server.seed. The installation will proceed in non-automated
  mode."

  This bug makes it impossible to use any other preconfiguration seed
  file, as the same bug happens with other preconfiguration modes/files.

  A video of reproduction can be found in the attachments.

  If I mount the /cdrom folder manually using "mount -t iso9660 /dev/sr0
  /cdrom", I can load the preconfiguration file correctly.

  This is on ubuntu-14.04-server-amd64.iso, verified by md5 hash and
  integrity verified inside installer as shown in the video.

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