I have received a low disk space message for Drive C. I deleted the F partition that was unused and empty containing about 2.5GB. How can I add that to the C Drive? I thought deleting the F partition will automatically direct those Giga Bytes to the C Drive. The deleted F drive just sits there with the message “Unallocated” still indicating 2.5GBs.

Source: askbobrankin

The upper issue is a common phenomenon. I believe that many users have received that kind of warning. The next, I will introduce that what is low disk space warning, and how to extend partition to eliminate that warning.

Why There Is Low Disk Space Warning

When a hard drive partition is low on free space, you will get a pop-out balloon warning in the System Tray alerting you that the computer is running low, or is out of, disk space, as the thresholds are approached. These thresholds are 200MB, 80MB, and 50MB respectively by default. That is to say, when the free space of the hard drive is smaller than 200MB, Windows will give the low disk space warning every now and then. This is really super annoying.

How to Extend Partition

Extend Partition by Deleting Files or Using Disk Management

Take me for instance.

Years ago, when I first received that warning, I chose to delete some large size but useless files from the hard drive. But I still need to store my work and personal data in my computer and with time goes by, the hard drive free space is smaller and smaller. Soon, that warning appeared again. Deleting files is not really a good and effective solution.

Then I realized that I could use disk management to get more space from another partition. But it’s not a smooth process. Just like the issue raised at the beginning of this post, the unallocated space will not be merged into the target partition automatically. To avoid convert basic disk to dynamic disk, extending primary partition was only available when there was contiguous unallocated space behind it, and extending logical partition just could borrow space from contiguous free space behind it. If there’s no unallocated space or free space in computer, the function “Extend Volume” is greyed out. Besides, extending partition in disk management is designed for NTFS and RAW partition. It’s impossible to extend FAT partition. There were so many limitations.

So deleting files and extending partition by using disk management are not the ideal methods. But, third party partition management software can break these limitations. Here, I introduce a piece of extending partition freeware to you all. It is MiniTool Partition Wizard, a piece of professional partition software, which can be used to extend partition, move/resize partition, migrate OS to a new disk, and more. The following are the exact steps to extend partition by using it.

How to Extend Partition Using MiniTool Partition Wizard

Take partition F: as an example.

Download and install MiniTool Partition Wizard on computer firstly.

Step 1. Launch MiniTool Partition Wizard, and get its main interface. Then, select partition F:, and press “Extend” from the right-click menu.

Step 2. Choose the partition and change the space size you want to take free space from in this interface, and press “OK” to continue.

Step3. Press “Apply” to save the changes.

See, this is really easy to extending partition by virtue of MiniTool Partition Wizard. If you encounter low disk space warning and don’t know how to extend partition fast and effectively, you can also refer to 3 Ways to Help You Get out of Low Disk Space Warning in Windows 7/8.1/10 to know more relative knowledge.

If you are using Windows Server, you should purchase MiniTool Partition Wizard Server Edition for your use.