Computer Question – Why Do You Have to Restart Your Computer?
This question was asked by Paul Prior. Paul wrote saying, “Out of curiosity, after updates I get a message saying to restart my computer, which I always do. What’s the reason for this?”
Transcription begins:
This is a pretty simple thing to understand when you think about it the right way.
First off, the updates he’s talking about are Windows updates, or software updates as they’re called on the Mac. These are fixes and improvements that have been issued by Microsoft, in the case of Windows, or, in the case of Mac OS X, by Apple.
Generally, on the Windows side, they’re almost exclusively fixes for problems. On the Mac side, they are maybe 50% to 75% fixes for problems, and 25% to 50% are actually improvements and enhancements they’ve added in.
You want to do these updates pretty much any time they come out, especially on the Windows side. It’s not just on the Windows side. I should be fair. Any time there’s a security update on the Mac or Windows side, you always want to do that as soon as you can. Most updates are security updates on the Windows side, generally speaking.
It’s never a bad idea to do a backup first just in case. Occasionally, some people will have problems with these updates. It’s a minority, but some people have run into problems. As a precaution, it’s a good idea to do a backup first.
Doing the updates is a really important thing to do because it fixes problems and security issues. If they’re not fixed, they can cause your computer to get invaded by a hacker, malicious program or what have you. You don’t want to have that happen.
By doing the updates, in many cases, the computer has to restart. Paul was wondering why this is.
Think of it this way. The files on your computer are like a rug. If you’re standing on a rug, can you take that rug, pick it up and clean it? Probably not because you’re standing on it. It’s in use. Files are much the same. If a file is in use, it can’t be picked up and replaced with a new version of the file just as you could not replace the rug with a new rug until you get everything off of it.
Essentially, what happens when you restart the computer after the update is it’s getting all the stuff off the rugs, picking the rugs up and replacing them with new rugs, so to speak. That’s why you have to restart the computer after you do an update.
Basically, it’s just a matter of getting out of the way of the files so they’re not in use and they can be replaced.
Hopefully that makes sense and answers your question.

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