When some partition in Windows 10 is in low disk space, Windows 10 will pop up a message at the corner to inform you that the disk is running out of space, which will eventually result in slow response on read-write speed. In this page, we’ll guide you how to fix this problem with the default method and the help of partition manager software
The warning message says: ‘You are running out space on Local Disk (D:). Click here to see if you can free space on this drive.’, so we click on the message, and press ‘Win+E’ at the same to open Windows Explorer, indeed, my D: Drive is red bar, and I can feel that my laptop is getting slower and slower at every click and file editing, so I checked the ‘Disk cleanup window’, it says I can free up to 2.04MB of disk space on this drive…I guess that’s because this drive has no temporary and redundant files for this program to cleanup.
I closed out this window and navigate into this drive, only to found no files or folder is deletable, all of them are required for work, so I think the clean up to get free space method just doesn’t suit me, I definitely need to find an alternative way, maybe extend this volume?
Back into the root window of Windows Explorer, the F Drive caught my attention, it’s an empty drive, maybe I can use it to solve the low disk space and low response speed problem, how about merge it or use it to extend D Drive?
Windows 10 has no function to merge a volume to another, so I turn to a third-party partition manager, Partition Expert, ‘Merge Volume’ is a built-in wizard, beside, it’s portable, which means I can directly run it without installing it to system
Now open Windows Explorer again, D Drive is in the normal blue color and the computer runs smoothly again
NOTE: This method only works when F Drive adjacent to D Drive, if E Drive stands between D and F, this solution won't work
I can also extend D Drive with unallocated space on the same disk, which is currently not available on my disk, how do I know there’s no such space? Windows Windows Explorer won’t show it even it’s available. I checked the disk map in Partition Expert, the disk map section shows every detail of the disk, primary partition, logical partition, GPT or MBR disk, free space and unallocated space, disk specs are all in the disk map
Then open Windows Explorer again, you’ll see the same result
Maybe you don’t have empty partition but a partition with much free space, you don’t want to backup or copy the data in that volume to external storage device either, then you can use the shrink volume function in Partition Expert to create unallocated space for low-disk-spaced partition
This time I will shrink E Drive and Extend D Drive, in Disk Management, we can’t do that, since unallocated space shrank from E Drive is at the end of E Drive, not in front of it, the Extend Volume option is only active when unallocated space is right after the volume you’d like to extend, to put it simple, let’s say the diagram below:
So we need a tool move unallocated space from the end of E Drive to the head of it, it’s time to run Partition Expert, if you haven’t shrank E Drive yet, we can start from the beginning, shrink it in Partition Expert instead
In the screenshots, I shrank E Drive and Extended C Drive instead, but you get the point
We can use a lot of methods to increase partition size, the default Disk Management and diskpart command line tool are good option for initialize partition and resize, but with time goes by and more data comes into disk, we’d like to resize a volume without formatting or deleting other partitions on the disk to create unallocated space or free space, we can use some partition manager programs instead, which shall have the ability to resize and move volume or partition without data loss and can do more than the default tools. In this page, the merge volume and resize move volume functions are the examples of increasing partition size, especially for the shrink large partition to extend small partition example, best explains resize move volume with data intact, guys, go ahead and download to fix the low disk space on Windows 10 problem