How to shrink a large sized partition is a bit tricky.
Here is the use case. When you bought a new PC with just a single partition as Drive C: with the Vista OS installed, you may want to shrink it down and leave extra space to another partition (say D: for your personal files).
If you try to directly shrink the C partition, it is often found that you could not shrink it as much as you wanted. This is because that some files are located nearly at the end of the partition that needs to be shrunk.
You can use PerfectDisk 8.0 to defrag those files and move them to be more compact in chunks near the beginning location of the partition. Even so, the 30-day free trail version of PerfectDisk isn’t that perfect as some system files are so persistent to be moved around.
Here is the tricks:
1. run PerfectDisk to defrag and clean up more free space first. Chances are that not much available space can be freed up.
2. try moving system files with PerfectDisk. It requires rebooting the system and perform such moving operation at the very beginning of next bootup. The consequence may improve a little free space, but still not enough to be shrunk as you needed.
3. At this moment, go ahead to use Vista Storage Management to shrink this partition to gain whatever available space for new partition.
4. Then repeat steps 1-2, amazingly you can further defrag and clean up more free space right after shrinking operation at step 3.
5. Repeat step 3 to shrink this partition further to whatever the Storage Management would allow you to gain.
After a few tries, you will be able to get enough size for the new partition as you desire so. Then you can format the new partition (say Drive D:) and start using it.