I ejected Bootable SSD from ubuntu UI accidentally, oops?

I was trying eject the USB stick drive from my Linux machine, when I accidentally clicked on wrong drive and ended up ejecting the SSD drive. Now that SSD also happens to the bootable SSD With stored data. After doing that I am not able to access file system icin. If I click on that drive from ubuntu UI, nothing happens. I haven't rebooted the machine since and I am able to view the data from the terminal shell. If I plug in another USB stick , it gets recognized but can't access that either. Is there a graceful way to come out of this situation without loosing data or without rebooting the machine ? Is there a graceful 'undo' command that I can use ?