Forum Discussion
How to add unused space to c drive without formatting for Windows 11?
Why the Windows 11 os takes so much space? I left 100GB space for C drive and windows os now occupies more than 90GB of c drive. My computer becomes lagging when the free space is less. The d drive ...
Common error messages & fixes for adding unused space to c drive.
| Error | Meaning / Fix |
|---|---|
| There is not enough usable free space on specified disk(s). | The unallocated block is smaller than the size you requested, or it’s not contiguous. Re-check with detail volume. |
| The operation is not supported by the object. | You tried to extend a FAT32 system partition or a dynamic/simple volume that doesn’t allow it. Convert/backup-recreate or use a third-party tool. |
| Virtual Disk Service error: The volume requires contiguous disk extents. | Exactly the non-contiguous issue—use a partition manager that can move or merge extents. |