On Sun, Dec 25, 2022 at 10:27:49AM -0500, Mouse wrote: > I find it far more plausible that I'm doing something wrong. Or maybe the drive just doesn't obey the spec? I've got a disk here that, when sent a SECERASE, writes 0x00 to the first 1 Gb of the media and leaves the rest unchanged. That clearly violates the spec.