TiVo Premiere Manual page 90

Clear & delete everything This option restores the TiVo Premiere's original factory settings. It
clears all Season Pass recordings, WishList Searches, Thumbs Up and Thumbs Down ratings,
TiVo Suggestions, My Shows or Now Playing list recordings, program information, To Do List
and setup information, including channel lists and Parental Controls. Completing this process
may take over an hour.
Settings
Operations like Clear & Delete
Everything may take over an hour.
®
During this time, it is recommended
that you turn off your TV to avoid "burn-in"
of static images on sensitive video
displays.
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