What a relief. It took a week of fiddling to rescue a bit of BTC that was stuck in an Armory wallet on Windows. Bitcoin Core has destroyed two of my hard drives (i.e. a Seagate Barracuda and a SanDisk Ultra SSD). A Samsung EVO SSD was able to withstand the beating. I was getting sporadic "Checksum mismatch, data corrupted" and "Deserialize or I/O error" fatal errors after long download periods and had to reindex/restart the blockchain sync many times which was very painful. Posting in case it helps someone trying understand why they get weird corruption errors during a sync.