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Impossible de shrink C: partition: Not enough space

ayi

I am trying to create a new partition on my laptop (XPS 12 9Q33, 128GB SSD) by shrinking the C:\ partition. Cependant, despite the fact that it indicates there is enough space, it displays an error message. J'ai successfully done this on my desktop, but pour une raison quelconque it fails on my laptop.

There is not enough space available on the disk(s) to complete this operation.

I am trying to shrink C:\ (which has _25GB free) by 10GB.

J'ai:

ensured there are no files at the end of the sector (disabling pagefile, etc.). See Comment puis-je shrink a Windows 10 partition? for how to do that (and you do need to do that).
turned off my antivirus temporarily.
disabled BitLocker encryption.

And it still fails. I've even tried Paragon's Partition Manager, which claims there is not enough space on the disk, which is not true.

J'ai even tried shrinking different sizes (down to 256MB), but to no avail (it still displays the same error).

Screenshots:

Toute aide serait appréciée.

ayi

Try launching the Observateur d'événements to see which individual files are blocking the partition shrink.

Once again, attempt to shrink the partition. Vous devriez get the "There is not enough space" error.
Launch Windows' Observateur d'événements application.
In Observateur d'événements, allez dans Windows Logs > Application.
Find and Click a recent log of type Warning. It should have the message, "Error: during volume shrink initiated on volume Windows (C🙂 we failed to move a movable file extent."
The Diagnostic details will give you the name of the "last unmovable file"
Delete this file (Simply send to recycle bin. I did not need a hard delete).
Try shrinking your volume again.
Repeat steps 2-7 until you successfully shrink your partition. (Dans mon cas, I had to do this 3 times, as I had 3 pdf files in my local Google Drive that were pour une raison quelconque stuck as 'unmovable'.).
Restore your deleted files.

CAUTION:
Assurez-vous you know what you are deleting! Dans mon cas, Je savais that these pdf files were:

Not system files
Easy to download again if they become lost