Failure Analysis: When we plug and unplug the hard drive, when you use it, you need to remove the icon of the removable hard drive in the taskbar tray area by removing the hardware icon. It often appears that "You cannot stop a universal volume device now." Please wait until the device is stopped. "Sometimes it's not possible to remove it from the Delete hardware icon in the taskbar tray area, and most people will choose to pull out the hard drive directly, and force Plug and unplug and worry about damaging the data on the removable hard drive." As shown in the figure:
Fault resolution:
First, the XP system operation steps are as follows: In the System Properties window that opens, click the Hardware tab at the top, and then click the Device Manager button to open the Device Manager window, as shown in the figure:
Double-click the appropriate USB hard disk entry under disk drives, and then, in the window that opens, select the "Optimize for quick Delete" item by clicking the "Policies" tab. When you are sure that the file on the USB drive is not open or operating, you can safely unplug it directly. As shown in the figure:
Second, win7 the words teach you how to make the mobile hard disk plug and Go freely operation method is similar to XP. First right-click on the computer icon on the desktop, Pop-up window select "Device Manager", then the Device Manager will pop up the dialog box, and then also click on "Disk Drive" in the open window click on the "Policy" tab, select "Optimize for quick Delete" item. Click the "OK" button to plug and unplug the USB and removable hard drives directly.