The system restore point is turned off by default in Windows 10 for reasons best knows to Microsoft. It might be have been turned off because it’s easier to reset Windows settings to their default or because of the ease by which you can reinstall Windows 10.
When turning on the system restore point you can specify the amount of space it can use on a particular drive. When there is not sufficient space to make a new system restore point the Windows will automatically delete the oldest restore point and make a new one. If your Windows 10 is running low on disk space and you are not sure how to reduce the amount of space used by system restore feature following is the procedure to do so.
Reallocate disk space to system restore feature
Step 1: Type Sysdm.cpl in start menu search box or Run command box and then press enter.
Step 2: The system Properties dialog will open, click on System Protection.
Step 3: Now in System Protection tab go to the heading named protection Settings, select the drive and then press Configure.
Step 4: Make sure the option named Turn on System Protection is selected. Now move the slider below right or left to increase or decrease the amount allocated to system restore point. Once done click Apply button.
Reallocate disk space used by system restore using Command Prompt
Step 1: Run Command Prompt as administrator. To do so right-click on the start button and then select Command Prompt (Admin).
Step 2: In the elevated Command Prompt, type the following and then press enter.
vssadmin list shadowstorage
Step 3: Execute the following command to allocate disk space to system restore feature.
vssadmin Resize ShadowStorage /For=X: /On=X: /MaxSize=NGB
In the above command, replace “X” with the drive letter of the drive where Windows 10 is installed, and replace “N” with the number of GBs that you want to allocate for the system restore feature. For instance, if Windows 10 is installed on “C” drive and you want to allocate 20 GB to system restore feature, then type the following command:
vssadmin Resize ShadowStorage /For=C: /On=C: /MaxSize=20GB
And if you want to allocate some % of disk space to system restore, execute the following command instead of the above one.
vssadmin Resize ShadowStorage /For=C: /On=C: /MaxSize=20%
In the above command, replace “C” with the drive letter of your Windows 10 drive, and replace 20% that the number that you would like to put aside for system restore feature.