2 Effective Ways for C Drive Low Disk Space in Windows 11

από τον John, Ενημερώθηκε στις: 17 Αυγούστου 2026

Πολλές Windows 10 users encountered the problem that the C drive runs low on disk space μετά την αναβάθμιση σε Windows 11. Αν Windows 11 is pre-installed on your laptop, desktop, or tablet, you will encounter the same problem someday. Many people report that there is not enough free space in Windows 11 after installing updates. In that case, the C drive shows as red in File Explorer. It is annoying when the C drive runs out of free space because the computer becomes much slower, gets stuck, or even crashes. This article introduces the 2 most effective methods to fix the C drive low disk space issue in Windows 11.

Why Is the C Drive Low on Disk Space in Windows 11 After an Update

Πριν από την ενημέρωση σε Windows 11, τα περισσότερα Windows 10 computers have been running for a long time. There is already a large amount of files saved to the C drive. If you install all programs to the system partition by default, the Ο δίσκος C γεμίζει quickly. It will become full even if you created it as large as 100GB.

Κατά την ενημέρωση σε Windows 11, additional files are saved to the C drive. In general, it consumes about 5GB to 10GB of free space. When you receive a "χαμηλό αποθηκευτικό χώρο" alert in a Windows 11 computer, you had better fix this issue as quickly as possible. Otherwise, the system will run slower, and the computer may get stuck or even crash.

Πώς να διορθώσετε το Windows 11 Low Disk Space Issue

Whether the C drive runs low on disk space after an upgrade to Windows 11 or in a pre-installed Windows 11 computer, you can solve this problem quickly and easily. There are many methods on the Internet, but few are highly effective. You can try them all, but it is really unnecessary except for the methods below.

Method 1 - Remove Junk Files from the C Drive

When the system C: drive runs low on disk space in a Windows 11 φορητό υπολογιστή, επιτραπέζιο υπολογιστή ή tablet, το πρώτο πράγμα που πρέπει να κάνετε είναι καθαρίστε τον δίσκο to remove junk and unnecessary files. If you just upgraded from Windows 10 and never cleaned up the C drive before, you may reclaim over 10GB of free space. To ελευθερώστε χώρο στο δίσκο Windows 11, there is a native Disk Cleanup tool. It is easy to use and runs quickly. Most importantly, it is able to remove most junk files safely without worrying about system damage.

How to fix low disk space on the C drive in Windows 11 by cleaning up the disk:

  1. Πατήστε το κουμπί Windows και R πλήκτρα μαζί στο πληκτρολόγιό σας, πληκτρολογήστε cleanmgr, και πατήστε εισάγετε.
  2. Η μονάδα δίσκου C: είναι επιλεγμένη από προεπιλογή. Απλώς κάντε κλικ OK για να συνεχίσετε.
  3. Click the checkboxes in front of the files that you want to remove. If you are not familiar with them, click on them and read the corresponding description at the bottom.
  4. Επιβεβαιώστε αυτή τη διαγραφή στο αναδυόμενο παράθυρο.
  5. Επαναλάβετε από το βήμα 1 και κάντε κλικ Εκκαθάριση αρχείων συστήματος στο βήμα 3.

Method 2 - Move Free Space from Another Partition

Το δεύτερο και πιο σημαντικό βήμα είναι adding space to the C drive from another partition. Some people have tried cleaning up the disk before, but the Windows 11 low disk space alert pops up again after a short time because new junk files are saved to the C drive continuously. If you cannot get over 20GB of free space, the C drive will, of course, become full again shortly.

Με ασφαλές λογισμικό διαμερισμάτων, you can shrink a partition on the disk to release free space and then add it to the C drive. In this way, the operating system, programs, and everything else remain the same as before. To accomplish this task, NIUBI Partition Editor is highly recommended. It provides a free edition for Windows 11/10/8/7/Vista/XP χρήστες οικιακών υπολογιστών.

Πώς να διορθώσετε τη μονάδα δίσκου C σε χαμηλό χώρο στο Windows 11 μετακινώντας ελεύθερο χώρο:

  1. Λήψη this tool, right-click the adjacent partition D (or E), select the "Αλλαγή Μεγέθους/Μετακίνηση τόμου" option, and drag the αριστερό όριο προς τα δεξιά in the pop-up window. Then Unallocated space will be created on the left.
  2. Right-click the C: drive and run "Αλλαγή Μεγέθους/Μετακίνηση τόμου" again. Drag the δεξιά όριο προς τα δεξιά για να συνδυάσετε αυτό το μη κατανεμημένο χώρο.
  3. Πατήστε Εφαρμογή επάνω αριστερά για να τεθεί σε ισχύ.

How to move free space to the C drive from another partition:

Windows 11

How to add more space to the C drive with a larger disk:

Windows 11

Besides shrinking and extending partitions, this δωρεάν λογισμικό διαμερισμάτων helps you perform many other disk partition management operations, such as moving, merging, copying, converting, defragging, hiding, and wiping partitions. Compared to other tools, it features Virtual Mode, Cancel-at-will, 1-Second Rollback, and Hot Clone technologies to protect your system and data. It is 100% clean without any bundled advertisements or plugins.

Λήψη

Method 3 - Move Programs and Files from the C Drive (Optional)

Many people install programs to the C drive with default settings, which is not a good habit. The more programs you install, the less free space is left in the C drive. In addition, some programs output large files in their installation directories. You had better install them to a separate partition such as D instead of throwing everything into the system partition C.

What can you do if you have already installed programs on the C drive? In a Windows 11 υπολογιστή, μπορείτε να μετακινήσετε προγράμματα (installed from the Store) to another partition without reinstalling them. Follow the steps below:

  1. Πατήστε το κουμπί Windows + R πλήκτρα, επικολλήστε την εντολή ms-settings: εφαρμογές, και πατήστε εισάγετε.
  2. Κάντε κλικ σε μια εφαρμογή ή παιχνίδι.
  3. Κάντε κλικ στο Κίνηση κουμπί.
  4. Επιλέξτε τη νέα τοποθεσία από την αναπτυσσόμενη λίστα.
  5. Κάντε κλικ στο Κίνηση κουμπί.
  6. Επαναλάβετε το βήμα 2 για να μετακινήσετε περισσότερα στοιχεία.

For programs installed using traditional methods, change their default output paths to another partition. Programs for video, projects, and games will output large files. In addition, you had better change the download path of your Internet browser to another partition as well. For files in the original download folder, you can delete them or move them to the new folder. Finally, run the Windows native Disk Cleanup utility monthly to remove newly generated junk files. After doing this, you can fix the C drive low disk space issue in your Windows 11 εντελώς υπολογιστής.