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Windows 10 4 Ways to Fix C Drive Full in Windows 10

4 Ways to Fix C Drive is Full Without Reason in windows 10

By Michael | Last Updated

After using the computer for a period of time, some user's C drive were show "low disk space". How to deal it? Here are 4 ways to do that.

Way 1 : Disk Cleanup

1.1 Open "This PC" →find the C disk and right-click to open the shortcut menu → find the "Properties" on the shortcut menu's bottom.

disk cleanup properties


1.2 Click the "Disk Cleanup" in the dialog box and wait for a while.

click disk cleanup


1.3 Click all contents in the new dialog box and click the "OK"' button.

click OK


This method helps to delete junk files for C disk space free up. Is there any alternative tool to do the disk cleanup faster than Windows built-in Disk Cleanup?

Yes, iSunshare System Genius is the right one, which enables you to one click free up system disk space. It is much easier for the beginners to handle. Once you start the program, you just need to click System Disk in the left menu and then the interface will show you the current status of C drive. What you need to do is click the Release button and more available space will be released soon. The C drive full problem can be solved easily.

one click to free up C drive


Besides, if you have a large number of duplicate files on your C drive, such as pictures, documents, video copies, etc. isunshare DupFiles Genius is your best choice to clean up these file copies. It helps you to search and remove duplicate files quickly and accurately. In this way, you are able to free up space on your C drive and improve the performance of your Windows 10 PC.

delete duplicate files on c drive


Way 2 : Move the Virtual Memory File (psgefilr.sys) to Free Up Disk Space

2.1 Display the hidden protected file pagefile.sys.
2.1.1 Open the C disk and click the "View" on the top of window→click the "Options" on the right. →select the "Change folder and search options".

move virtual memory file view

click change folder and search options


2.1.2 In the dialog box, click "View"→ cancel "Hidden protected operating system files (Recommended)".

uncheck hide protect operating syatem files option


2.1.3 Select the content "Show hidden files, folder and driver"→ "Apply" and "OK".

click show hideen files, folders, and drivers


The pagefiles.sys file is displaying on the C disk.

display pagefiles.sys file


2.2 Create the virtual memory file on the other disk
2.2.1 Right click on the blank area of "This PC" window to open the shortcut menu→ click "Properties".
2.2.2 Click "Advanced system setting" on the left side of the popup window→ click the first "Setting" in "Advanced".

click Advanced system settings

click settings under Advanced tab


2.2.3 Select "Advanced" again→ click the "Change" below it.

click Change under Virtual memory option


2.2.4 Select target disk (I chose disk E as an example) on pop-up dialog box, select "Custom size" and enter "Initial size" and "Maximum size".

choose Disk to customize virtual memory


2.2.5 Click "Set" and "OK". (Virtual memory file have been created.)

2.3 Delete the pagefile.sys file on the C disk
In just virtual memory window, select C drive and select the "No paging file"→click "Set"→ "OK".

set no paging file


Way 3: Turn Off Sleep or Compress Sleep File Size

3.1 Turn off sleep
3.1.1 Right click on the computer desk's blank area to open shortcut menu.
3.1.2 Click "Personalize" and select "Lock screen" in the pop-up window.

turn off sleep lock screen


3.1.3 Select "Screen saver settings" and click "Change power settings".

turn off sleep change power setting


3.1.4 "Change plan settings"→ "Change advanced power settings".

turn off sleep advanced power settings


3.1.5 Choose "Never" in the "sleep" category. (Close the hibernation) → "Apply" and "OK".

turn off-sleep never sleep


3.2 Compress the sleep file size
3.2.1 Using WIN+ R conbined shortcut key, enter "cmd" and "OK".

compress the sleep file cmd


3.2.2 Input or copy this command: powercfg hibernate size XX
The XX above is the compression ratio, which ranges from 40 to 100 integers.

compress the sleep file-run


3.2.3 Press Enter key to run to compress the sleep file.

Way 4 : Increase Disk Space by Resizing Partition

4.1 Right click on "This PC" and select the "Manage".
4.2 Find "Storage" in the left popup window →open the drop-down menu and click "Disk management".
Wait for system to load the hard disk information. Then the lower right of window will show each disk's status.

resizing partition disk management


Due to the special mechanism, the unallocated space on the hard disk can only be allocated to its adjacent partition.

4.3 Only one disk partition (disk C)

4.3.1 right click on the status bar of disk C to open the shortcut menu and click "Extend volume".

resizing partition extend volume


4.3.2 The system will prompts you to input the value of extension (the capacity will be separate from the disk unallocated).

resizing partition input value


4.3.3 After the input completed, click "Next" and "Finish" later.

resizing partition finish


Complete the extension of disk C.

4.4 More than one partition
You may need to split the unallocated space into a new disk and move the contents of the previous disks into the new disk. Moving the data of each disk until the disk next to the disk C finish data transfer.

4.4.1 At this moment, right click the disk which next to C disk and choose "Delete volume".

resizing partition delete volume


4.4.2 Right click the C disk and select "Extend volume".
4.4.3 Input the desired expansion capacity according to the system suggestion.
4.4.4 Click the last "Finish" button and finish the extension capacity of C disk.

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