Hide a Drive in Windows

Hiding a Drive in Windows is easy.
Follow the steps below to do that.
Go to Start -> Control Panel -> Administrative Tools -> Computer Management
Click on Disk Management under Storage.
Right Click on the Drive to be hidden. Then click on "Change Drive Letter and Paths..."
A new dialog box will appear. Select the Drive & click "Remove" button. Click "Yes" to confirm.

Now open "My Computer" and the drive is vanished.

To restore or assign a new drive letter,
Right Click on the Drive. Then click on "Change Drive Letter and Paths..."
A new dialog box will appear. Select the Drive & click "Add" button.

Enable Disk Defragmentation on boot

Microsoft Windows XP can do a boot defragment. This places all boot files next to each other on the disk to allow for faster booting.
By default this option is enabled but on some builds it is not so below is how to turn it on.
Modify the following registry values:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\BootOptimizeFunction
Change the value of "Enable" to Y to enable and N to disable.
Reboot your computer.

Also see HKEY LOCAL MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\Memory Management\PrefetchParameters and EnablePrefetcher = 1 application launch prefetching, 2 boot prefetching
add the numbers.
AND
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\ "Enable"="Y" (Y = defrag will optimize for boot and app launch)

FreeCell -- Win Always

Start the game FreeCell. Start playing.
Press Ctrl + Shift + F10 while playing.
FreeCell will ask you to Abort, Retry or Ignore.
You select Abort.
Then you try to move any card, even if the move is not allowed.
Then see the result!!!!

Disable CD AutoRun for Windows XP Home Ed

Change the following registry key.

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoDriveTypeAutoRun"=dword:0x000000FF

Disable CD AutoRun for Windows XP Professional

Change the following registry keys.

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdrom]
"AutoRun"=dword:00000000

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\NoDriveTypeAutoRun]
"NoDriveTypeAutoRun"=dword:000000b1

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoDriveTypeAutoRun"=dword:000000b1