Wednesday, July 15, 2015

windows 10 - Cannot shrink C: partition: Not enough space


I am trying to create a new partition on my laptop (XPS 12 9Q33, 128GB SSD) by shrinking the C:\ partition. However, despite the fact that it indicates there is enough space, it displays an error message. I have successfully done this on my desktop, but for some reason 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.


I have:



  • ensured there are no files at the end of the sector (disabling pagefile, etc.). See How can I 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.


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


Screenshots:


It allows me to shrink 10GB (unlike similar issues)


but fails on this message:


Any help would be appreciated.


Answer



MS's Disk Management never shrinked right for me, usually having this kind of problems. I'd try a different program, my best experience is with MiniTool Partition Wizard Free. It won't shrink BitLocker encrypted partitions though. Since it's your system disk, you'd better do it from some live environment (such as some Windows PE environment if you have a license for that and use MiniTool Partition Wizard Free or other Windows tool there, or GParted Live CD or SystemRescueCD if you're comfortable enough with Linux) – and DON'T FORGET TO BACKUP before shrinking the drive.


Lists of live rescue/administration environments can be found at many places, such as at gfi.com in post "Top 5 Free Rescue Discs for Your Sys Admin Toolkit".


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