Hi folks, I have been having freezing issues for the last few weeks on my HR21 Pro and yesterday it crahsed and reset with hd self check with errors. Than it rebooted to "running receiver self check". Since I own and and do not rent the box I would like to just replace the internal hd but, I am not sure if there is a boot code in flash on the receiver that would bootstrap a blank hd and download the direct-tv software on it. Does anyone have a link on this? I did see some links on external hd but, nothing yet on an internal swap? The physical swapping process is not a concern just getting the software back up and working. Thoughts and advice? Thanks!