Windows 10: Storage problem on partition C

I have a bit strange problem on Partition C in a relatively old lap top running Windows 8.1. Its size is 200 Gb and currently there are only 12.9 Gb free out of 200. Since a week the available space is continuously reducing of 3-5 Gb/daily in absence on any activity. I noticed the problem when free space was about 45 Gb. I started working on another computer and I daily boot this computer in the morning and shut down in the evening. Without any activity 3 to 5 GB are lost daily. I run bit defender and Avast to check presence of virus and run CCleaner and Cleanmgr. They help

:)

 

Resize partition C

In order to extend C and recover space from D, you will need to delete the 866 MB Healthy Recovery Partition and the Storage D:\ partitions.

There appears to be data on the D:\ partition.

I recommend you backup any important data on that partition before deleting it. After deleting the partitions, you will be able to extend C:\

Steps:

Right click the ‘Healthy (Recovery Paritition) and the
Storage (D’ partitions in Disk Management, on the contextual menu, click the ‘Delete Volume’ option. Click ‘Yes’ when the warning dialog appears.

The Volume you deleted will now appear as ‘Free space’, you will also notice that the disk icon no longer appears in the list of volumes.

Right click the Free space partition, and click Delete, click Yes on the Disk Management warning that appears.

The volume will now appear as Unallocated. Our next step is to merge back that unallocated free space with the system partition
(C. Right click the System volume then click the ‘Extend Volume’ option on the contextual menu, click ‘Yes’ when the warning appears.

A wizard will now begin that will guide through the steps to merge back the unallocated space with your system partition.

The wizard provides a simple procedure to merge back the unallocated space with the system drive. Once you have selected the space, click Next, at the end of the wizard, you will see the amount allocated.

 

W7 Hard drive partition issue

to get rid of that 100 meg windows partition that setup creates for you on a new install on a blank hdd:

- press shift+f10 when on the partition management screen in setup <-- this opens a command prompt
- diskpart <-- start the windows command line partition management tool
- list disk <--- list the installed hdds in this computer for the next step
- select disk 0 <- might have to replace 0 with the number of the correct disk
- clean <-- this will erase all data on the disk you selected one step up- dont use the wrong disk!
- create partition primary <- creates a primary partition taking up all space on the drive, adjust the command if necessary
- exit, exit to exit diskpart and the command prompt
- click refresh in partition manager and select your newly created partition and install to that

 

How to increase the storage of C:\ partition storage?

I have Huawei matebook 14 i7 thant I have purchased 6 months ago

the storage partition is set to

C:\ 120 GB

D:\ 335 GB

Since most programs are saved on C:\ , the space is consumed up very quickly and I only have 30 GB free space left

I want to decrease D:\ storage and increase C:\ storage, maybe make them C:\ 250 GB and D:\ 200 GB (I have a lot of cloud storage so I could manage)

How could I perform that without damaging my computer?

and will it require formatting my computer?

Thanks