如何自动延长 windows 2008 试用版的试用期

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　　How to extend the Windows Server 2008 evaluation period
How to install Windows Server 2008 without activating it

• Run the Windows Server 2008 Setup program.
  
• When you are prompted to enter a product key for activation, do not enter a key. Click No when Setup asks you to confirm your selection.
  
• You may be prompted to select the edition of Windows Server 2008 that you want to evaluate. Select the edition that you want to install.
  Note After Windows Server 2008 is installed, the edition cannot be changed without reinstalling it.
  
• When you are prompted, read the evaluation terms in the Microsoft Software License Terms, and then accept the terms.
  
• When the Windows Server 2008 Setup program is finished, your initial 60-day evaluation period starts. To check the time that is left on your current evaluation period, run the Slmgr.vbs script that is in the System32 folder. Use the -dli switch to run this script. The slmgr.vbs -dli command displays the number of days that are left in the current 60-day evaluation period.
  

How to manually extend the evaluation period
When the initial 60-day evaluation period nears its end, you can run the Slmgr.vbs script to reset the evaluation period. To do this, follow these steps:  

• Click Start, and then click Command Prompt.
  
• Type slmgr.vbs -dli, and then press ENTER to check the current status of your evaluation period.
  
• To reset the evaluation period, type slmgr.vbs –rearm, and then press ENTER.
  
• Restart the computer.
  

How to automate the extension of the evaluation period
You may want to set up a process that automatically resets the evaluation period every 60 days. One way to automate this process is by using the Task Scheduler. You can configure the Task Scheduler to run the Slmgr.vbs script and to restart the server at a particular time. To do this, follow these steps:  

• Click Start, point to Administrative Tools, and then click Task Scheduler.
  
• Copy the following sample task to the server, and then save it as an .xml file. For example, you can save the file as Extend.xml.
  　　
  
  
  2007-09-17T14:26:04.433
  Microsoft Corporation
  
  
  
  
  P31D
  false
  
  2007-10-05T02:23:24
  2008-09-17T14:23:24.777
  true
  
  
  
  
  domain\alias
  Password
  HighestAvailable
  
  
  
  
  PT10M
  PT1H
  true
  false
  
  IgnoreNew
  true
  true
  true
  false
  false
  true
  true
  false
  false
  true
  P3D
  PT0S
  7
  
  PT1M
  3
  
  
  
  
  C:\Windows\System32\slmgr.vbs
  -rearm
  
  
  C:\Windows\System32\shutdown.exe
  /r
  
  
  
  
• In the sample task, change the value of the following “UserID” tag to contain your domain and your alias:　　domain\alias
  
• In the Task Scheduler, click Import Task on the Action menu.
  
• Click the sample task .xml file. For example, click Extend.xml.
  
• Click Import.
  
• Click the Triggers tab.
  
• Click the One Time trigger, and then click Edit.
  
• Change the start date of the task to a date just before the end of your current evaluation period.
  
• Click OK, and then exit the Task Scheduler.
  

The Task Scheduler will now run the evaluation reset operation on the date that you specified.