Low disk space issue is very common in all Windows computers, especially to the computer with a small system C drive. It is headache for many personal computer users. Is it possible to resize partitions without reinstalling Windows and programs? The answer is yes, you may use either Windows native tools or third party partition editor software. Before starting, you'd better make a backup because there's potential data loss risk.
Windows has 2 native tools - Disk Management and diskpart. Diskpart works via command prompt, which is included from Windows XP. Diskpart has shrink and extend command to help resize partition without losing data. In Windows XP and Server 2003, diskpart can only shrink system partition from bootable media. In Windows 7 and subsequent versions, diskpart can shrink system partition in Windows.
Disk Management has graphical interface, so it's easier to personal computer users. Originally, this tool can only create, delete, format partition and change drive letter. From Windows 7, Microsoft added Shrink Volume and Extend Volume functions to help resize disk partition.
However, because of many limitations, both Disk Management and diskpart are not the best tools to help change partition size.
Press Windows and R together on the keyboard to open Run, type diskmgmt.msc and press Enter, then Disk Management will be opened.
To shrink a partition volume with Disk Management:
To extend a partition volume (such as C:) with Disk Management, your disk partition structure must meet the requirements:
To extend C drive partition with Disk Management:
If you want to extend a partition by shrinking another one, Disk Management is useless, learn why.
How to shrink a partition volume:
How to extend a partition volume:
Disk Management and diskpart work in different way but they have same limitations. If you just want to shrink a NTFS partition to create new, or extend a NTFS partition by deleting the right contiguous volume, you may try these native tools. If you want to resize FAT32 partition, or extend a partition by shrinking another one, you have to run 3rd-party software.
There are many third party software in the market, among them all, NIUBI Partition Editor is the safest and fastest because of the advanced technologies:
To Windows 10/8/7/Vista/XP home computer users, NIUBI has free edition, which is 100% clean without any bundles. When resizing disk partitions with NIUBI, you just need to drag and drop on the disk map.
Follow the steps in the video to resize partition on Windows 10/8/7/Vista/XP (32 & 64 bit):
Besides resizing partition volume, NIUBI Partition Editor helps do many other operations such as move, merge, convert, copy, defrag, wipe, hide, scan bad sectors.