Recovering from failure to install Grub

From	Richard Owlett <rowlett@cloud85.net>
Newsgroups	linux.debian.user
Subject	Recovering from failure to install Grub
Date	2017-01-17 21:20 +0100
Message-ID	<t0Iox-38E-9@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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I just installed Jessie to a USB flash drive.
Unfortunately I mistyped the name of the preseed.cfg file and ran 
the one which did not install grub to the target drive.
On a working Jessie machine I inserted the flash drive and then 
ran update-grub.
I was then able to boot the copy of Debian residing on the flash 
drive.
It appears to run properly and is now installing some packages 
that intentionally had not been installed by preseeding.

Looking for instructions for installing Grub to an existing drive 
I found
https://wiki.debian.org/Installation+Archive+USBStick?highlight=%28grub-install%29|%28jessie%29 
.

It was written to address a different situation.
It seems to say that all I have to do is run

   /usr/sbin/grub-install --boot-directory=<mount_point>/boot 
/dev/sdb

Is that correct for my situation?

TIA

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Thread

Recovering from failure to install Grub Richard Owlett <rowlett@cloud85.net> - 2017-01-17 21:20 +0100
  Re: Recovering from failure to install Grub Hans <hans.ullrich@loop.de> - 2017-01-17 21:40 +0100
    Re: Recovering from failure to install Grub Richard Owlett <rowlett@cloud85.net> - 2017-01-17 22:00 +0100
      Re: Recovering from failure to install Grub Richard Owlett <rowlett@cloud85.net> - 2017-01-18 11:50 +0100
  Re: Recovering from failure to install Grub Brian <ad44@cityscape.co.uk> - 2017-01-18 01:00 +0100
    Re: Recovering from failure to install Grub Richard Owlett <rowlett@cloud85.net> - 2017-01-18 12:00 +0100
      Re: Recovering from failure to install Grub Brian <ad44@cityscape.co.uk> - 2017-01-18 12:50 +0100

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