I had posted some time ago hoping someone could enlighten me on the functional details as to how space needed deletes operate but unfortunately didn't get any useful info so I'm hoping I'll have better luck this time. Although I appreciated prior replies that suggested installing a larger capacity drive or setting the SP's to Keep Until delete, it doesn't answer my core question which is trying to have a fuller understanding of how this function operates. In particular I have often had multiple recordings unintentially deleted following the transfer of a previously transferred recording back onto the Tivo. Here is a specific example of what troubles me. This afternoon I had about 100GB of free space on my 3TB Tivo Drive, the Going Away Soon list indicated that there would be recordings deleted tomorrow if needed, so I felt safe that I could transfer a recording of approx. 6GB from a external drive onto the Tivo for viewing without fear of other recording being deleted, when I initiated the transfer I got a warning message indicating that several recordings would be deleted earlier than previously scheduled but the earliest would take place on Thurs. After transferring the recording I find that about a dozen recording had summarily been deleted with the history indicating "Space Needed" yet the Free Space on the drive increased from about 80 GB to 110 GB, I would have expected that the system would utilizing existing free space before deleting recording that that clearly is not the case, I can recall similar things happening whilst I still had 300 or 400 GB free. If anyone can shine some light on the subject I'd certainly be appreciative..