Tech Tips Archives

September 9, 2007

Mac Switch Tips

We had a call into our radio program recently with someone asking for tips on how to use Apple's Macintosh OS X for a person coming from the Windows world. I did some searching and I have a list of links that look to be full of good information. Let me know if this helps anyone out, or if you have any suggestions for additional links or resources to add to this list.

Switching Tips:
From Lifehacker
From PC Magazine
From Extreme Tech
From The Tao of Mac
Ongoing Resources:
Mac World Mac Help
Mac OS X Hints
Mac Tips
Macbreak Weekly Podcast

April 27, 2007


Displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) settings. Used without parameters, ipconfig displays the IP address, subnet mask, and default gateway for all adapters.

ipconfig [/all] [/renew [Adapter]] [/release [Adapter]] [/flushdns] [/displaydns] [/registerdns] [/showclassid Adapter] [/setclassid Adapter [ClassID]]

Common use
ipconfig /all
To display the full TCP/IP configuration for all adapters.

Internet troubles???

It may be a good idea to print this guide, since you won’t be able to access the internet in this situation.

If you are using Cox as your ISP (Internet Service Provider) and the command ipconfig /all returns an IP address 169.254.x.x (APIPA) you have lost your connection with Cox, or your router, if you have one.

Troubleshooting (verbose)
First things first... unplug your cable modem and router (if you have one). Wait a few second then plug your cable modem back in and then your router. Use the command ipconfig /all again to see if your IP address has changed from 169.254.x.x to something else. If it has open a web browser and see if a page will load.

Still getting a 169.254.x.x address dig a little deeper...
Try using the following command.
ipconfig /release
This parameter disables TCP/IP for adapters configured to obtain an IP address automatically. This will release the APIPA address that your network adapter has been assigned. Next, use the following command.
ipconfig /renew
This will renew DHCP configuration for all adapters (unless otherwise specified). Once you have done this check to see if you have a new IP address with....
ipconfig /all
If you get an IP address that starts with anything but 169.254.x.x you should be in good shape.
Try to ping (see Command Line, Ping) a website such as or If you get a reply you are in business.

Or... if that is too much work restarting your computer will work too, but what fun is that?

Still no internet, consider calling a technician to further troubleshoot your network.
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