2 nights ago, my Dish Network PVR 721 (dual tuner) was working just fine. I watched a recorded show until about 1 AM. When I turned off the system, it had about 18 hours of record time remaining but I don't think I had any programs set to record overnight. The next day, I turned on the system around noon.... only to find that all my recorded programs had been wiped out and I now had 100+ hours of record time available. Ugh. It had also erased all future record events.

I tried doing a hard reset, and unplugging the system then plugging it back in, but to no avail.

Tech support at Dish Network just basically said "this happens sometimes" when the box receives new information or a software upgrade, records an error and tries to fix it... and fails... so it wipes clean the hard drive.

Can anyone offer data recovery tips or point me towards a company that offers such services that actually has experience working with PVRs/DVRs (and not just desktops)? I'm not concerned about losing a few hours of sitcoms but there were some older, protected recordings that were work-related that I'd really hate to lose.

Any tips would be appreciated! Thanks for reading.