I recently had my laptop repaired because of a suspected hard-drive problem. It boots into Windows normally now, but I can't install required updates because Windows reports that the C: drive is full. The laptop also has a D: drive with plenty of free space, so I'm wondering why Windows is using C: for updates and how I can safely make better use of D:. I'm not very familiar with storage and don't want to delete anything important. What's the safest way to identify what is filling C: and move suitable files to D:?
4 Answers
It would also help to inspect Disk Management so you can see whether C: and D: are separate partitions on one physical drive or separate drives. If C: is a small partition and D: is just unused space beside it, resizing may be possible, but make a backup first and avoid changing partitions unless you’re sure of the layout.
Windows is installed on C:, so updates normally need free space there. You can move personal files such as videos, downloads, pictures, and documents from C: to D:, then remove the originals from C: after confirming the copies work. Don’t move Windows or program folders manually.
You can change the location of your personal folders. In File Explorer, right-click Documents, Downloads, Pictures, Music, Videos, or Desktop, choose Properties, open the Location tab, and change the C: portion to D:. Accept the prompts to create the folder and move the existing files. Repeat only for folders you actually want stored on D:.
Before moving anything, check what is using the space. Windows’ Storage settings can show the largest categories, and a disk-usage tool such as WinDirStat can help identify unusually large files or temporary data. You may be able to clear temporary files, but review the list carefully rather than deleting unfamiliar system folders.
I’ll check Disk Management and identify the largest folders first. I’ll move only personal files and make a backup before attempting anything involving partitions.