While doing hard drive maintenance in Windows Disk Management, you may find that Extend Volume is greyed out in some cases. Here is a picture showing this situation:
What cause Extend Volume Greyed out? Here I list the most common factors.
For Basic Disks:
1. The partition you want to extend has other file systems instead of NTFS and RAW file system.
2. There is no continuous unallocated space behind the primary partition you want to extend or no continuous free space behind the logical drive you want to expand.
For Dynamic Disks:
1. There is no unallocated space on all dynamic disks.
2. There is no continuous unallocated space behind C drive.
3. No continuous unallocated space is located behind mirrored volume, striped volume, spanned volume, and RAID volume, or continuous unallocated space is located behind only one segment of these types of volumes.
Knowing the reasons that lead to Extend Volume greyed out, you know the ways to fix this issue: convert partition file system by formatting, delete a partition to make it unallocated space/free space, delete some volume to make some unallocated space. However, these will definitely bring data loss unless you make data backup in advance.
So here comes an excellent suggestion: use a professional partition manager to help you. My suggestion is to use MiniTool Partition Wizard, a safe, clean and easy-to-use partition magic alternative. What’s more, its free edition is capable of doing this job.
Download MiniTool Partition Wizard Free
Step 1. Run MiniTool Partition Wizard to the main interface. Then select the partition that needs expanding and choose Extend Partition from the action panel.
Step 2. On the pop-up menu, first of all, choose a partition or unallocated space from the drop-down menu. Then slide the bar to decide how much free space you want to take from the partition/unallocated space you have just selected. After doing these 2 operations, click OK to shut down this window.
Step 3. Finally, click Apply button on the top left corner to bring this operation into effect.
By doing the above 3 steps, you have finished extending partition easily despite that Extend Volume is grayed out. Most importantly, you don’t need to do deletion or backup, all your data are still there. So don not hesitate to have a try if your Disk Management cannot extend volume!
More useful features for you:
In addition to helping users extend partition when Extend Volume is grayed out, MiniTool Partition Wizard brings more powerful features for users to manage hard drives better. For example, its Copy Disk feature is extremely useful when you need to upgrade hard drive to SSD/HD, Its Check File System feature helps to fix corrupted file system, it helps to convert FAT to NTFS and vice versa, it enables to convert hard drive to GPT to MBR and vice versa. For more information, you can visit the official HELP page.