Just do:

grub-install /dev/sda1

...but don't you really want to install grub to the drive itself?  If do:

grub-install /dev/sda

Brian Cluff


On 10/26/2016 10:05 AM, Michael wrote:
I messed up. I installed mint18 on my external drive but mint18 is not quite ready for prime time so I figured I would put mint 17.3 on. Well, durring installation I told it to put grub on the external drive. now I can't boot unless the external drive is plugged in. I need the port the external is plugged into because that is the only USB port it will boot from and I need that port  for the thumb drive. So  my question is how do I install grub to sda1......

Mint won't boot now! How do I RESTORE WINDOWS SO i CAN DO THIS AGAIN?

--
:-)~MIKE~(-:


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