Posted 07 September 2011 - 01:55 AM
You can simply format the hard drive to start over with a clean backup drive.
The back up process can be a long procedure if a full backup is taking place, I suggest you allow the back ups to do their normal back ups and every two weeks, simply format the hard drive.
Windows allows you to schedule the back up, decide what you want to back up, but it does not clean the hard drive first.
You could use task manager to schedule a disk clean up on both your drives.
As for deleting MRT folders or files, I suggest you allow windows to decide what should and shouldn't be deleted.
Use disk clean up and choose the options there to clean up old files that are no longer necessary for safe operation and security of your computer.
As far as file extensions such as .avi displaying you can go to control panel, look for folder options, then look for show extensions for known file types, if there is a check mark next to it, remove it. Now windows will no longer show file type extensions such as .avi.
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