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

[Steve Tyler]

Seeing this error when trying to install from a thumb drive/flash
drive/jump drive/usb drive (written that way for SEO).

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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:
  Expired

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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