Tips: It is important to back up the data before resizing system partition, because nothing is 100% secure. You can download the program now and follow the step by step wizard to extend volume in Windows easily and with no data loss. In addition, it can extend C drive without rebooting if it is NTFS formatted.

With Partition Assistant, we can extend volume by using its “Resize/Move” function. With user-friendly interface and step-by-step wizards, it is far easier than diskpart.exe utility to extend Windows partitions. It has the ability to resize and move partition, extend system drive, merge partitions, split partition, allocate free space, copy partition, copy disk on MBR and GPT disk, with all data protected. It offers both magic partition management and disk management. You can merge the unallocated space to C (as the picture shows) or use 'Extend partition wizard' in the left panel.ĪOMEI Partition Assistant Home Edition is completely free partition software. When “Extend volume” is grayed out in Windows 7, we can use third-party partition software to extend its partition, such as Partition Assistant (you can google this program). Here is an example about resizing Windows 7 partition with Partition Assistant Home (freeware) For example, for Windows Vista/Win7/8, server 2008/2012, the system partition must be NTFS format, contiguous free space is required, etc. While sometimes the “Extend Volume” option is grayed out, what happened?Īlthough windows disk management has been improved, but to be honest, it still only provides the basic functions that do not allows you resizing the partition smoothly. Especially you can extend the volume with the adjacent unallocated space on the same disk. You are able to extend/shrink volume by yourself. I am trying to extend Partition C using the unallocated space. It is well known that since Vista, Windows has improved its Disk Management. Windows 7 Forums is the largest help and support community, providing friendly help and advice for Microsoft Windows 7 Computers such as Dell, HP, Acer, Asus or a custom build.

How can I merge this unallocated space to C: drive? Question: I have a simple disk configuration, only C: and D: drives, I have freed up 20 GB from the D: drive using the 'shrink volume' option, but I can not merge the 20 GB unallocated space to C: drive? In disk management, the extend volume on the C: drive is grayed out.

Extend partition windows 7 greyed out