[Bug 1476178] Re: Installer tries to install grub on the wrong disk

[Thaddaeus Tintenfisch]

** Package changed: xubuntu-meta (Ubuntu) => ubiquity (Ubuntu)

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https://bugs.launchpad.net/bugs/1476178

Title:
  Installer tries to install grub on the wrong disk

Status in ubiquity package in Ubuntu:
  New

Bug description:
  I have just installed Ubuntu 14.04 on a Dell precision M3800, via
  download of the USB network installer.

  This gave me some headache installing grub, since during the install, the hard disk was assigned to /dev/sdb.
  Installing the file system worked well, but the grub part failed. No matter what I did, it always tried to install grub on /dev/sda

  I ended up in continuing the install without bootloader, and when finished, I escaped the install sequence and executed a shell where I executed this command:
  grub-install --root-directory=/target /dev/sda

  Thus I worked around the problem, but I think that this is an easily
  fixable bug in the installer. It should just check which device is
  mounted on /target

  PS: I guess the cause of this behaviour, is that the USB stick which I
  use, does not contain a driver for the disk controller. Thus the
  driver module is first loaded when the USB gets network access and can
  fetch the driver from the net. Thus the USB is always assigned
  /dev/sda. When the system is installed the kernel knows the driver and
  the disk gets /dev/sda

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