Today, while turning on my iMac, a strange gray progress bar appeared in the 'Apple' start screen. I assume I felt some fear. Then, the login screen shows in red: 'Safe Boot'. Later, the menu bar appeared to be brighter than ever. Oh my God! Thanks to google, I found that safe boot is a mode which you can access by holding shift during startup. Probably I pressed shift accidentally, even though I do not remember. The question is: now, that I restarted my mac and it's back to the normal, will this 'Safe Boot' bring me any consequences? How to proceed? Thanks!