Trying to install Elementary OS to a USB stick , ran into a few problems:
I booted from another live usb, formatted a 28GB ext4 for Linux (
/dev/sdb1) and a ESP (
/dev/sdb5) on the USB, chose to install bootloader on
/dev/sdb. The installer did its things and after it was done I realized that the ESP I created was empty and that GRUB has been installed in (
/dev/sda). Now the USB sticks, as expected, only boots on his laptop.
How can I reinstall GRUB on the USB stick?