I have seen some scary stuff on this forum about TiVo upgrades taking DAYS because of the size of the drives and because people are using USB to SATA converters which are slow. I will be in the same situation soon, convers and all (I'm using a laptop). How long (aprox) should I expect it to take per GIG to copy to the new drive? At most there can only be 160GB of info on the stock drive. If you were transferinging a replica of that to a new drive why would it take so long? Hopefully I plan to only have about 20 to 30 hours of SD recordings when I do the transfer.