Running Kodi from a USB hard drive

I downloaded Kodi yesterday and installed everything and added my media, all located on my external drive. I’ve unplugged my drive and connected to another pc and all my media paths have gone and no media shows up when I run Kodi. It’s almost like a clean install.

I’m sure all the information needed and whatever I’ve scrapped must be located on the PC I initiated the install on.

If it’s not to much trouble could you guys point me in the direction of instructions of how to make KODI completely mobile.

Thank you