[Bug 719112] Re: Alternate install to non-primary drive results in grub MBR error

[Phillip Susi]

I'm not sure what you mean by "can I install grub on boot drive?"; I
have never seen such a prompt.  What I see is after choosing to
partition manually ( "something else" ), on the partitioning screen you
can choose where to install grub to.  One of the automatic choices
however, just installs it to /dev/sda without asking, and that is
intentional.

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Title:
  Alternate install to non-primary drive results in grub MBR error

Status in grub-installer package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: grub-installer

  When installing 10.10 via the x86 Alternate Installer CD, with an
  installation target that isn't the first drive in the system, grub
  installs the MBR on the primary drive.

  I have 3 drives in my system, and the BIOS is set to boot from the
  second one (/dev/sdb).  During the alternate install (used to create
  an encrypted LVM), the installer prompts to have grub create a new MBR
  on the boot drive.  It then installed the MBR on /dev/sda, regardless
  of what drive the OS has been installed to.

  Workaround: Select Go Back to get to the installer menu, select
  Install Grub in MBR on boot drive, and tell Grub to install on the
  correct drive (/dev/sdb in my case).

  This is a silent failure, and would be very confusing to a novice.

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