There are many partitions on a disk, like C, D, E drives. There are also some unallocated space on the disk shown as "*" and marked as unallocated. The unallocated space is the space that hasn't been put into use. You cannot use it until you use the unallocated space to create a new partition or add the space to other drives.
When the unallocated space is right behind the partition, right-click on the c drive, and choose Extend Volume to enlarge the c drive space. When the unallocated space is not right behind the partition, you are unable to extend a partition with the help of Disk Management.
The free built-in utility just allows you to resize windows partition with unallocated space just behind the partition you want to expand. Otherwise, you might be caught in "extend volume greyed out" error. Many users are suffering from this issue when they are trying to extend C drive.
To fix this problem, you have to move unallocated space to the left, right, or end of the drive. But how can you manage it? Windows do not offer you a way to move unallocated space, so you have to turn to a third-party disk management tool.
We recommend you Qiling partition software, a popular tool that can help you deal with almost all complicated disk partition related jobs in Windows 11/10/8/7/XP/Vista. And, here its advanced and flexible features can satisfy all your demands:
Here, a step-by-step tutorial will guide you to move unallocated space with no hassle. Download the Qiling partition tool and move the unallocated space to the left, right, or end of the partition.
The Windows Disk Management can not move unallocated space to the left side, thanks to the smart operating of Qiling Partition Master, you can drag the bar to assign additional space to anywhere. No matter where the unallocated space is, you can use "Resize/Move" to extend disk space.
Step 1. Click the partition that next to the unallocated space, select "Resize/Move".
Step 2. Put the mouse on the partition and drag it to the left or right to move the unallocated space. Click "Proceed" to add the unallocated space into the target partition eventually.
You can repeat Step 1 and 2to move the unallocated space to the desired location.
Under the guidance of this approach, you can get ahold of how to allocate unallocated space to c or other drives. If your c drive is jammed with junk files, there is also a guide about how to clean c drive. With this software, moving the unallocated space isn't a complicated thing. If you want to extend the G drive partition with the unallocated space, using the F partition to move the unallocated space to the right side, so that you can use Qiling Partition Master to extend it.