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
