My friend tells me that he met with some problems in the process of managing in his disk. When he meant to shrink a specified partition in a disk (total capacity: 150GB; free space: 143BG) to produce a new partition he got failed. The Windows built-in disk management tool could only decrease a few GBs. However, he actually wants to get 40GB free space. The prompt message says that there is no enough space that can be used to fulfill the operation on the disk. Now he gets puzzled about the reason why Windows DM can not decrease partition size under this situation.
In fact, the cause can be that immovable files (pagefile, hibernation file, MFT backup, or others) occupy the space that he wants to decrease. In order to change the size with Windows DM, people have to delete or move those files to other dives firstly. Then they can shrink disk partition. However, the task that mentioned above is not easy to complete. For common users, it will be difficult to find these files. Fortunately, there is a freeware that can make things easy. The powerful MiniTool Partition Wizard can fix the problem listed above.
1. Download and install the recommended partition magic to Windows. Then, open it to enter its main interface:
Note: install it to the free drive. If not, users have to restart the operation system.
2. Choose the partition which needs shrinking and click “Move/Resize Partition” on the action panel.
3. Drag the black triangle to decide the size you need releasing. Or you can type the desired value to the corresponding box to get the same result. Then click “OK” to go to the main interface.
Here, the purpose of shrinking disk partition has been reached. And the unallocated space is shown in the screenshot above. Please click “Apply” in the left corner to execute all pending operations.
Now, the former problem that people can not decrease partition size in Window DM has been fixed. With the unallocated space, both Windows DM and MiniTool Partition Wizard can produce new partitions.