Originally Posted by oagermann
Thought that I would update to my original post here. With the help of a very knowledgable forum member it was definitely possible to both combine an existing external and small internal (500g) drives with recordings spanned across them onto one larger (3T)internal drive on my premiere 746500 while preserving the recordings. The process required some knowledge of a 3rd party hard drive partitioning program which I had zero exposure to but with the members patience I was able to work through it all. Also the intensity of the steps require a good knowledge of the entire tivo structure and there was a few times that steps had to be adjusted on the fly so I in no way would be able to also walk someone through what we did just simply due to my minimal experience in this process but again the purpose was to at least let others know that the process is entirely possible to do. I ended up with a double capacity unit and 98% saved recordings (note that the missing 2% which amounted to only 8 recordings may have been skewed by my mis-entering a figure incorrectly or just a casualty of the process. I'm leaning towards my mistake as the reason however either way for me it was a miniscule price to pay for the rewards gained. Thank you again for all of the contributors to thus forum who's tools and help make things like this possible for those such as myself with such minimal knowledge.
As long as this thread has been brought back from the comatose, if not dead---
In a case like this it's a very good idea to "Xerox" the internal drive to another one and do all experimenting on the copy.
Glad to hear it worked out for you.