Easily fix "Extend Volume" greyed out with AOMEI Partition Assistant AOMEI Partition Assistant is a professional disk manager that can tap into the disk potential and manage partitions efficiently.

To do so, open the Disk Management control panel, right-click your existing partition and pick “Extend Volume.” You can expand a partition only into physically adjacent unallocated space.

Figure 5: The partition has been deleted. Now, go ahead and close DiskPart and relaunch the Disk Management Console. With the OEM partition removed, it is now possible to extend the C: volume.

How to Extend a C Partition in XP. The Windows operating system divides your computer's hard drive into specific spaces known as "partitions." Data from one partition does not cross over into ...

2] Extend Recovery Partition with Disk Management Extending the recovery partition is the best and safe way to clear the low disk space warning from your system.