That 28GB drive is entirely too small for Windows 10 and your only real hope is to use the Disk cleanup utility on a regular basis and using the Clean up system files option to dump as much as possible. Read this:
https://www.techrepublic.com/articl...com/article/how-to-clean-up-system-files-with-the-windows-10-disk-cleanup-tool/

 

Thank you,

I already had tried disk clean up but could only delete a few MBs.

Also had already manually deleted some TEMP files but, where do I find the win installation Temp files, win Log files, which win defender ones ? etc.

I am scared in case I delete things that will kill my Notebook.

Do I delete all in the Disk clean up "More Options" or the system restore / shadow files?

I only upgradet w8.1 to w10.

This Notebook has a physical HD like my desktop?

I found this below very complicated & confusing:- ( BTW what is SxS?.)
https://www.techrepublic.com/articl...-files-with-the-windows-10-disk-cleanup-tool/

 

It has pictures (!!!) In the lower left corner of the Disk cleanup window is the "Clean up system files" button. Click it and then follow the pictures in that article; a whole new list will appear.

 

Thanx,

found it but, unfortunately like the straight Disk clean up it only cleaned 30-40 mbs.

I found a lot of files in the Download & the Desktop directories & moved them, in a corresponding directory I made, in a stick.

that cleared sufficient space for the LibreOffice to install.

Strangely though , the desktop directory in win explorer disappeared but, the all files are still showing on the desktop itsel???.

Thank you very much for your help. .........nick