HELP! NO Internet connection after using Terminal (DNS Disabled? / mDNSResponder)

[mystic08]

Somebody please help and I will seriously send you cookies or a donation.

I have a new mac mini (purchased around janaury, 2013) - it is running 10.7.5

Earlier today I was fiddling with Terminal trying to do a few things like clearing the DNS cache/flush, sudo killall -HUP mDNSResponder (which didn't seem to work) then I tried to unload then load the /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist -- anyways I believe I have disabled my DNS because my WIFI symbol at the top is connected but when I open the web browser I get nothing and my other computers and devices work fine. I think I have to re-enable the DNS but canno't find a solution ANYWHERE on the dang internet. Everything I try in Terminal will give me permission denied and I really don't have any idea what I'm doing. ANY help would be greatly appreciated. I don't know how to go about resolving this

Mike.

 

[opinio]

Find your primary and secondary DNS from your ISP and check it is in your router settings. If not, input the numbers.

Also you can add the DNS settings in your network settings.

 

[philipma1957]

once you fix it buy yourself a cheap hdd and clone a backup

 

[mystic08]

Guys, thank you both for the advice but still no luck. I strongly believe the way to fix it is to re-enable the DNS from Terminal which is broken down into two steps. First I need to find a way on how to go about fixing the "permission denied" problem on Terminal, once I figure that out I believe all I must do is type the bottom line of code into Terminal and things should be working again.

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.mDNSResponder.plist


...Also, It seems as so this guy is having the exact same problem? I can't believe there's no way to fix this?..
https://forums.macrumors.com/threads/1370465/

 

[opinio]

Can't you just go to:

System Preferences --> Network --> Click on relevant network link --> Advanced --> DNS

Then under DNS servers put either your Router IP or try your ISP/RSP primary and secondary DNS addresses.

Did you try this or not?

 

[mystic08]

Yes, that was unsuccessful as well! Fortunately, I did a time machine back up (which took hours) and then restarted with CMD + R and reinstalled without swiping the drive. All in all 5-6 hours but all my files were intact and everything is working again. thnx for all your suggestions

 

[snberk103]

Terminal is a dark, scary place! For a total non-geek, like me, just the mention of Terminal causes the hairs on the back of my neck to stand up! Just knowing that there is very little I can do to screw up my computer elsewhere, but knowing I could cause terminal troubles in Terminal keeps me away.

It ain't called Terminal for nothing!

OK, and for real....those who have reasonable knowledge of what they are doing find Terminal very useful and efficient...just not me!

Note the text I bolded above....

Shrink says it better than I ever could....

 

[satcomer]

Also if you feel like playing in terminal with the mDNSResponder then first consult the Apple document OS X: How to reset the DNS cache.

 

[mystic08]

Trust me, lesson learned!