Tag: XP

Optimizing Windows XP

Last week I spent most of my time, setting up a laptop with WindowsXP, and it dawned on me to put together a little document on how I optimize Windows. Once Windows is installed and you logon for the first time, I basically do eight steps:

  • Run Windows Update
  • Disable unneeded services
  • Modify the Registry for tuning up performance
  • Install Anti-Virus and Spam-blocking programs
  • Install Third Party Applications
  • Add some final utility programs

The Optimizing WindowsXP page goes into further detail.

Filed under: WindowsTagged with: , , ,

Flushing DNS Lookups

Every now and then I run into a situation where I need to clear my DNS cache. This is sometimes needed when there are negative DNS values, meaning incorrect IP addresses on my computer for certain internet sites that I want to connect to. You can use the following commands to flush DNS and see if this allows you to reach the site.

Mac OS X:

For OS X, Lookupd takes care of cached DNS entries. You will need to open a Terminal session and type the following command:

lookupd -flushcache

On Mac OS X 10.5 Leopard, you no longer have the lookupd command. Use the dscacheutil command instead:

dscacheutil -flushcache


For Windows, the IPConfig utility serves as an easy way to view TCP/IP settings and as a utility to flush DNS. You will need to open up a prompt and type the following command:

ipconfig /flushdns

Windows2000 & XP save negative DNS entries by default, so you might want to try disabling negative DNS caching to get a more responsive internet connection.

Microsoft has some notes on DNS settings in Windows too that you can reference.

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