[Bug 1184066] Re: Cannot boot usb live media: hardcoded path to udevadm (2013.05.24 daily live)

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** Branch linked: lp:ubuntu/casper

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Title:
  Cannot boot usb live media: hardcoded path to udevadm (2013.05.24
  daily live)

Status in “casper” package in Ubuntu:
  Confirmed
Status in “cryptsetup” package in Ubuntu:
  Triaged
Status in “systemd” package in Ubuntu:
  Triaged

Bug description:
  Ubuntu Desktop images doesn't boot from USB and the user is dropped to
  a busybox prompt with the message : "Unable to find a medium
  containing a live file system"

  On tty7 the following error is displayed "/init: line 7:
  /sbin/udevadm: not found"

  both i386 and amd64 affected
  not reproducible in virtualbox
  not reproducible in dvdrom

  
  TEST CASE:
  1. Download Saucy desktop iso build >= 2013.05.24
  2. Burn it to a USB stick:
      $ sudo dd if=saucy-desktop-amd64.iso of=/dev/sdX bs=4M
  (replace X by the letter corresponding to your stick - be careful to not write to your hard drive)
  3. Boot from the stick

  ACTUAL RESULT:
  After a while, boot failed and the message "(initramfs) Unable to find a medium containing a live file system" is displayed.

  
  from casper/initrd.lz:
  njin at njin:~/Ubuntu$ ls -l sbin
  total 1920
  -rwxr-xr-x 1 njin njin  31536 mag 25 13:29 blkid
  -rwxr-xr-x 1 njin njin   1416 mag 25 13:29 brltty-setup
  -rwxr-xr-x 1 njin njin 225152 mag 25 13:29 btrfs
  -rwxr-xr-x 1 njin njin  46800 mag 25 13:29 cryptsetup
  -rwxr-xr-x 1 njin njin  21168 mag 25 13:29 dmraid
  -rwxr-xr-x 1 njin njin   6822 mag 25 13:29 dmraid-activate
  -rwxr-xr-x 1 njin njin  67536 mag 25 13:29 dmsetup
  -rwxr-xr-x 1 njin njin  23072 mag 25 13:29 dumpe2fs
  -rwxr-xr-x 1 njin njin 175232 mag 25 13:29 fsck.btrfs
  -rwxr-xr-x 1 njin njin  35384 mag 25 13:29 hwclock
  -rwxr-xr-x 1 njin njin  43888 mag 25 13:29 kpartx
  -rwxr-xr-x 1 njin njin  43584 mag 25 13:29 losetup
  -rwxr-xr-x 1 njin njin 914368 mag 25 13:29 lvm
  lrwxrwxrwx 1 njin njin      9 mag 25 13:29 modprobe -> /bin/kmod
  -rwsr-xr-x 1 njin njin  39704 mag 25 13:29 mount.cifs
  -rwxr-xr-x 1 njin njin  10240 mag 25 13:29 mount.fuse
  lrwxrwxrwx 1 njin njin     12 mag 25 13:29 mount.ntfs -> /bin/ntfs-3g
  lrwxrwxrwx 1 njin njin     12 mag 25 13:29 mount.ntfs-3g -> /bin/ntfs-3g
  -rwxr-xr-x 1 njin njin  81632 mag 25 13:29 plymouthd
  lrwxrwxrwx 1 njin njin      9 mag 25 13:29 rmmod -> /bin/kmod
  lrwxrwxrwx 1 njin njin      3 mag 25 13:29 vgchange -> lvm
  -rwxr-xr-x 1 njin njin  10560 mag 25 13:29 wait-for-root

  original description:

  I made the USB stick with USB startup creator in precise. Tested sha256sum and it checked out. When i rebooted into the USB stick i get following error message
  Busybox v1.20.2 (Ubuntu 1:1.20.0-8ubuntu1) built in shell (ash)
  Enter 'help' for a list of built-in commands.
  (Initramfs) Unable to find a medium containing a lice file system.

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