I second < robomeister >'s info. the tools available on the mfslive.org site work well. Although, if you not comfortable with Linux, I would recommend trying the application:robomeister said:The DT has an IDE drive, otherwise known as a ATA or PATA (parallel ATA) drive.
The Instant Cake utility creates a fresh copy of the TiVo OS onto a new drive. It doesn't save your recordings or settings. If you want to save recordings, I'd recommend visiting mfslive.org for your upgrade needs. You can download a free CD image (an .ISO) and make a backup of your drive before you upgrade to a larger drive.
Hope that helps,
which is a windows based app. that allows you to create a truncated backup of your existing DVR drive. It also will allow you to make a disk to disk copy, and expand to fill the capacity of the new drive.
I just used the WinMFS software to upgrade my Humax DRT800, 80hour unit to a 472 hour unit.
All the original save programs work, and I was able to immediately download Amazon.com Unbox on TiVo videos.