In the popular Windows 7 operating system, "disk management" is a great tool. It allows you to allocate space on your local drives, as well as create and delete them. In fact, this is a simplified version of common hard disk management programs. I want to note right away that "XP disk management" works on the same principle as in the "Seven". So if you follow the guidelines below, you should be able to do it on both operating systems.

The "disk management" tool is located at the following address: the "Start" button, then go to the "Control Panel", after it - to "Administrative Tools", then select "Computer Management", where we will find it. You can see the list of your local disks in the upper block of the window that opens. The bottom block, in turn, will show the allocated space between them, as well as the available connected media.
To reduce the size of the local disk D, you need to right-click on it with your manipulator, and then select the Shrink volume option. In the window that appears, you will need to select the required degree of compression of the local disk. After that, you will immediately see how much space will be availableOn him. Enter the size and click "compress". After a while, at the bottom of the window called "disk management", you will see a black area. Don't be afraid, that's how it should be. This is an unallocated area.

Go to the next item. Now we need to create a new local disk, for example, twenty gigabytes in size. To do this, right-click the manipulator on the black area and select "Create a simple volume", after which a "wizard" will appear in front of you, with which you will create a simple volume.
Click the "Next" button and in the next window set the required size for the disk. Again, you need to select "Next", after which we assign the desired letter for the volume. Nothing more needs to be asked. Press "Next" again. Now you can give this disk a name, or you can not name it - it's up to you. That's it, we confirm the settings and get a twenty gigabyte disk.
Now you can try another feature of the Disk Management tool. Let's expand this local drive to the available free space. Click on the new disk with the manipulator (right button) and select "Extend volume". You will see the corresponding "wizard" window. Click "Next" and specify the additional size of the disk (set the maximum), then click "Next" again. Check all entered data. If everything is correct, confirm with the "Finish" button. After that, your disk will become larger.

Now let's bring everything back to its original form. Delete the created volume and expand drive D. To do this, right-click on the drive you want to delete and select "Delete Volume". Next, read the system warning and confirm. An unallocated area will appear in front of you.
This is not all the features of the "disk management" tool. It can do much more, but not every user will need to use all of them. You should also use it very carefully, because if there is important information on your disks, it can be irretrievably lost.