Forum Discussion
How large is your Windows 10 system's C drive partition?
I want to understand how much space other users allocate to the C drive when installing Windows 10 (e.g., 120GB, 256GB, 500GB), as well as the actual space occupied by the system on the C drive after normal use for a period of time (excluding personal files). This information will serve as a reference for optimizing my own disk partition planning.
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I don't do W10 anymore, no point since it basically out of support, but for W11 I use all of the main hard drive of the system as the C: drive and don't create additional partitions.
I'll add an additional drive for my work documents and files.
If I'm creating a virtual machine then I do 100GB as it's an extreme pain to try and expand it later due to Microsoft's hidden "health" partitions that usually end up at the back of of the drive and if want to expand later becomes a hassle.
For a standard Windows 10 installation with some updates and system files accumulated, expect about 30–50GB of space used on the C: drive. This leaves room for system functions, updates, and some minimal applications without immediate space issues.
