On Tue, 10 Jan 2012, datawiz wrote:
Specifically, it uses 18-sector protection which stores the equivalent of 18 sectors of data within a track.
Interesting, I haven't looked so far into 18 sector schemes.Just by a quick glance, track #0 of "master_a" disk has visibly 17 sectors. There are also two instances of hard sector #1, with different data.
Sync fields are also generous. They must have slowed down the writing RPMs quite much to fit this many bits.
Now that I look at it, NIB's track length of 6656 (0x1A00) nibbles is not enough to carry 18 sectors with such sync fields. I suspect they're either not 18, or something went wrong in the conversion.