should I delete the windows.old and $WINDOWS. ~ BT file?

I need to upgrade to windows 8.1 in my laptop. but it requires little space. So I need to delete unwanted files. is it safe to delete windows.old and $WINDOWS. ~ BT file?

If you don't no need for data and do not need to reverse, you can remove both by running the Disk Cleanup Wizard

Tags: Windows

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