[Bug 1066653] Re: "reinstall Ubuntu 12.10" on efi system fails when trying to mount /boot/efi

[Steve Langasek]

Looks like this is the problem:

Oct 15 03:17:45 ubuntu ubiquity: mount: /dev/sda1 already mounted or /target/boot/efi busy
Oct 15 03:17:45 ubuntu ubiquity: 
Oct 15 03:17:45 ubuntu ubiquity: mount: according to mtab, /dev/sda1 is already mounted on /target/boot/efi

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https://bugs.launchpad.net/bugs/1066653

Title:
  "reinstall Ubuntu 12.10" on efi system fails when trying to mount
  /boot/efi

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  Testing a reinstall of Ubuntu 12.10 on top of an existing 12.10
  install on my SecureBoot test hardware, I got the following error pop-
  up:

    The attempt to mount a file system with type vfat in SCSI3 (0,0,0),
  partition #1 (sda) at /boot/efi failed.

    You may resume partitioning from the partitioning menu.

  At the time this prompt is shown, sda1 is mounted at /target/boot/efi.

  By this point, the install seems to have gone far enough along that
  cancelling and retrying no longer gives an option to reinstall -
  instead giving only the option to erase the disk and install.

  I'll attach a ubiquity --debug log showing this bug.

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