Microsoft virtual PC virtual machine devil slimming Microsoft virtual PC virtual disk capacity is dynamically allocated. After running for a period of time, we will find its virtual hard disk file (*. Vhd) is increasing. In this case, the most effective way to "lose weight" for the virtual machine is to use ——Precompact, a compression tool provided by Microsoft, whose download address is/attachments/month _ 0411/sphw _ precompact.zip. Step 1: Start the virtual PC and run the specified virtual machine. After entering the system interface, move the Precompact.exe file downloaded to the host to the virtual machine through the * * * shared folder, and run the main program to prepare for the compression operation (as shown in figure 1). MicrosoftVirtualPC Virtual Machine Devil Slimming Diagram 1 Step 2: After the installation is completed, click the "Yes" button in the pop-up prompt dialog box, and then shut down the virtual machine. Then bring up the "Virtual PC Console" and click the menu bar "File → Virtual Hard Disk Wizard". Step 3: Select "Edit Existing Virtual Hard Disk" in the "Hard Disk Options" interface. Step 4: Select the path of the virtual hard disk file in the virtual hard disk editing interface. Step 5, select "Compression" in the "Virtual Hard Disk Information and Options" interface (as shown in Figure 2). MicrosoftVirtualPC Virtual Machine Devil Slimming Figure 2 Step 6, choose whether to compress the dynamic virtual hard disk to replace the original file or save it as (if there is an error during the compression operation, the virtual hard disk may be damaged, and users can choose according to their needs). Step 7, complete the setting and perform the compression operation. Depending on the capacity of the virtual hard disk, this process will take about a few minutes. When the compression is completed, we will find that the capacity of the virtual hard disk files before and after compression has shrunk to some extent.