When Drive C: is overloaded, which items can/should be deleted (and in what order) and which items should not?
I've got a desktop PC (Windows 7 Ultimate) with a 500 GB solid-state C: drive which is in the red and obviously needs some relief. I'm posting this question because I'm never quite sure how to approach this situation.
Following are some screenshots of TreeSize Free showing the sizes of folders and subfolders in Drive C.
Without displaying too many personal items in the screenshots, can someone comment regarding things that jump right out has being problematic and deletable vs things that are not? For example, the recycle bin and my son's old LoL game can promptly be tossed. But what about the 16GB pagefile.sys file? I have no idea what that is.
Next is the 43GB Windows folder of which 20GB is something called winsxs and another 8 GB is Installer. Was should/can be done with those?
I recognize most of the large folders & files in my C:\Users folder. However, I'm never quite sure what to do with AppData, particularly what's in the Local vs. Roaming vs. LocalLow subfolders:
Finally, I've never noticed the "Errors" indicator at the bottom of TreeSize Free, but this last screenshot shows a sample of what appeared when I clicked on it:
Need, I be concerned about that?