How to Reset Network to Default

To reset Network Configuration to factory setting, here are the steps:

1. Turn off Wifi and unplug network connection;

2. Go to  /Library/Preferences/SystemConfiguration

3. Rename  preferences.plist  to  preferences.plist.bak  (just in case it is needed)

4. Reboot and a new preferences.plist will be created with the network configuration reset to factory default.


How to Change Machine Name

To change the name of the Mac, open Sharing in System Preferences.

Enter or change the name of your choice at the space provide:

Don’t mix this Machine Name up with Short Name and Full Name.   Machine Name is the name you want to call your Mac and to be shown to others in a network environment.

Short Name and Full Name are the names of the user of the Mac.  These two are used to identify who is the user, and to define and create account information on the Mac.

How to Remove Duplicate Icons in Launchpad

To eliminate duplicate icons in Launchpad

1. Run  Terminal

2. Type  sudo rm ~/Library/Application\ Support/Dock/*.db
               to remove the problematic Launchpad database

3. Enter user password to permit change

4. Type  sudo killall Dock
to recreate a new database

5. Exit  Terminal

A free app called Launchpad-control can do above resetting with just a few clicks.

How to Calibrate Battery

Followings are instructions from Apple regarding battery calibration.  The computer can be used as normal during Step 1 to 4.

1.  Charge the battery to full

2.  Keep the adapter plugged in for at least two hours

3.  Disconnect the adapter while the computer is on

4.  Drain the battery until the computer turns off automatically

5.  Leave the computer in sleep for at least five hours

6.  Don’t turn on the computer right after reconnecting the power source

7.  Only turn on the computer after it is fully charged

How to Double-click-and-Drag in Lion

The Lion OSX no longer allows the action of Double-clicking the Title bar to Drag a Window by default.  To activate the function:

  • Go Universal Access under System Preferences
  • Enable Dragging under Trackpad Options

In Mountain Lion, this Trackpad Option has been moved to Mouse & Trackpad under Accessibility category.