Windows 10: Can't delete unwanted System partition

Hi everyone, I'm having troubles deleting an unwanted partition D: from my SSD. I've had a Windows 10 installed on it D: previously and for one reason or another it malfunctioned and I had to install a fresh copy of Windows 10. Which I did on a different partition C:. Installation was a success. C: is now a default partition. But I can't delete the original D: now. I've tried Disk Management and Power shell, but none worked. This is a screenshot from Disk Management.




When I try to delete volume/format I get the message that I can't delete system partition and that D is in use. How is it in use and how to delete it?

:)

 

Help, I deleted a partition, and can't seem to "extend" the other partition

Ok, here's how it happened.

I had 2 partition. XP and Win7 x86.

I shrank the Win7 x86 partition and created a new partition (Win7 X64)

I then deleted Win7 x86 partition.

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edit: what warup suggested did the trick. It took 20+ minutes for that software to do it, but hey it worked.. Thanks

 

Delete unwanted files

Hi,



Thank you for writing to Microsoft Community Forums.



For better clarity, please help us with the details requested below:

• When you say, “SYSTEM DRIVE” are you referring to System Reserved Partition or the drive where windows is installed?
  
• Which unwanted files are you referring?
  

If you are running out of space on your computer, you may want to refer the suggestions mentioned in the article

Free up drive space in Windows 10.



Please reply with more information to assist you with the appropriate troubleshooting steps.



Regards,

Nikhar Khare

Microsoft Community - Moderator

 

Can I safely delete certain partitions?

All the partitions to the right of C:\ can be safely deleted. I noticed you have some substantial unallocated disk space that you should try recovering.

After deleting the suggested partitions, the Volumes you deleted will now appear as ‘Free space’, you will also notice that the disk icon no longer appears in the list of volumes.

Right click the Free space partition, and click Delete, click Yes on the Disk Management warning that appears.

The volume will now appear as Unallocated. Our next step is to merge back that unallocated free space with the system partition (C. Right click the System volume then click the ‘Extend Volume’ option on the contextual menu, click ‘Yes’ when the warning appears.

A wizard will now begin that will guide through the steps to merge back the unallocated space with your system partition.

The wizard provides a simple procedure to merge back the unallocated space with the system drive. Once you have selected the space, click Next, at the end of the wizard, you will see the amount allocated.