Bug#766920: initramfs-tools: update-initramfs makes system unbootable due to missing rootfs

[Laur Aliste <laur.aliste@gmail.com>]

Same issue still persists after using the "root=UUID=" syntax with
grub (which is the default).
Kernel line in grub command line:
    linux  /boot/vmlinuz-3.16-2-amd64
root=UUID=11bb4d9d-8451-4632-9985-1bd9b155dba8 ro  quiet


Booting ends up with the following screen (with input disabled):
  Decompressing Linux... Parsing ELF... done.
  Booting the kernel.
  Loading, please wait...
  Gave up waiting for root device. Common problems:
  [--]

  ALERT! /dev/disk/by-uuid/11bb4d9d-8451-4632-9985-1bd9b155dba8 does not exist.
  Dropping to a shell!
  modprobe: module ehci-orion not found in modules.dep
  modprobe: module uhci-hcd not found in modules.dep
  modprobe: module ohci-hcd not found in modules.dep
  modprobe: module usbhid not found in modules.dep

  BusyBox v1.22.1 (Debian 1:1.22.0-9+b1) built-in shell (ash)
  Enter 'help' for a list of built-in commands.

  /bin/sh: can't access tty; job control turned off


Terminal output during the update:
  [..]
  processing triggers for initramfs-tools (0.116) ...
  update-initramfs: Generating /boot/initrd.img-3.16-2-amd64
  /dev/sdg1: No such file or directory
  [--]