Just yesterday I was able to boot Kali on my raspberry pi without much of a problem. The following day, however I tried booting it as usual. It showed the boot screen and everything with the four raspberries in the top left corner of the screen, but after it got done with that it gave me a black screen and wouldn't allow me to do anything except unplug the Pi. On top of that, I can't look at the contents of the micro SD because my Mac will not mount the micro sd card reader when I insert it into the Mac. I can't figure out what's going on, hence my reason for asking this question. Help is appreciated. Thank you.