[hsmomx3]

I have a question.

When doing a disk file clean-up, is it safe to empty items such as System error Memory Dump Files, Delivery Optimization Files....

I am not sure what is safe to delete as I have about 1GB in all.

[dayglored]

In general, I trust Windows to not delete critical stuff when it does a "clean-up" using its own clean-up tools. The only thing I make sure to keep around are the System Restore Points, typically saving the most recent two (the most recent one is usually the important one; the next most recent is just a fallback).

Years ago I would try to make my own decisions about what to keep and what to delete, and it drove me crazy trying to second-guess Microsoft's engineers. So these days I trust them to not pull the rug out from under their own feet.

And still I cross my fingers and offer up a prayer anyway.