I've been using Zorin Ultimate 15.2 for a few months on an old Toshiba laptop (I5, 4GB ram). This is my first real experience with Linux, so I really don't know what I'm doing. I was on the web (Firefox) when the system froze up. I cycled power a couple of times, no help. I finally resorted to the old "pull the battery" trick. Now when I turn it on it boots to the command line as follows:
BusyBox v1.27.2 (Ubuntu 1:1.27.2-2ubuntu3.3) built-in shell (ash)
Enter 'help' for a list of built-in commands.
(initramfs)
How do I recover from this? Can I do a repair from the original USB drive?