Help replacing dying drive in stock TiVo HD

I have a TiVo HD with lifetime service, and no hardware upgrades. It still has the stock 160 GB hard drive, and after ~9 years of service, it's finally giving up. At least I assume that's the problem. The TiVo is stuck in a reboot loop, sometimes reaching "Almost There", sometimes rebooting before that. I suppose I could have a capacitor problem, but I feel like I should try replacing the hard drive first.

I've purchased a 2 TB "Red" WD drive from Newegg (model WD20EFRX) based on some...

Help replacing dying drive in stock TiVo HD

Help replacing dying drive in stock TiVo HD