[SOLVED] How do I remove the old windows 10?``

[Jacob 51]

I got two installations of windows 10 on my PC. One is in an MBR harddrive, which I want to remove. The other one is on an GPT SSD that I am currently using.
The HDD has only one partition, and it has all of my useful files including the old windows. The windows is MBR so it doesn't show up in MS Config, since UEFI cannot run on MBR windows.

How do I delete those files? It shows me "You need permission from trusted installer to make changes to this folder" when I try to delete it.

I cannot backup the important files for the moment, so the formatting is not possible Rn.
Also, the old windows files didn't go to a folder named as "Windows.old", like it used to before. its still in windows folder.

 

[USAFRet]

I cannot backup the important files for the moment, so the formatting is not possible Rn.

For multiple reasons, this is your first mistake.

You NEED a backup of that data, even if you weren't getting ready to do a major deletion/formatting.
You need that always.

Please show us a screencap of your current Disk Management window.

 

[kerberos_20]

just take ownership of that windows folder, set owner to well anybody
right click windows folder -> properties -> security -> advanced -> owner thrusted installer change -> advanced -> find now -> everyone -> ok -> ok -> replace owner on subcontainers -> ok
now you should be able to delete it with administrator account

 

[Jacob 51]

For multiple reasons, this is your first mistake.

You NEED a backup of that data, even if you weren't getting ready to do a major deletion/formatting.
You need that always.

Please show us a screencap of your current Disk Management window.

https://imgur.com/a/l4Jf4CI

View: https://imgur.com/a/l4Jf4CI


The Hard disk which has the old windows is Disk 1 (1TB)

 

[USAFRet]

The TakeOwnership thing mentioned above will work.

But that is still a messy solution.

To delete, at a minimum:
Windows
Program Files
Program Files (x86)
ProgramData

 

[kerberos_20]

Now it says "You need permission from everyone to make changes to this folder."

i guess looking at windows from its point of view, it should rather be telling you that no valid administrator exists, well its not unfixable
right click windows folder -> properties -> security -> advanced -> add -> select principal -> advanced -> find now -> everyone -> ok
here check type = allow, applies to = this folder, subfolder and files and check mark full control
then ok,
check mark replace all child object permission entries blah blah... -> ok
well that should do some magic