Shingled drives can still be read sector-by-sector. The shingling just changes how the data is written; it doesn't change how the data is read. So no, a single

Shingled drives can still be read sector-by-sector. The shingling just changes how the data is written; it doesn't change how the data is read. So no, a single bad bit would only affect a single sector. And in fact, a single bad bit wouldn't do any harm, as all drives use error correcting codes that can handle a lot more than a single bit going bad. You'd actually lose a whole sector at time (512 bytes or 4096 bytes, depending on the drive).