every single time I've been forced to bulk erase a disk to get a good format, the success was short lived and bad sectors returned in short orderI had a number of them with bad sectors and also a couple of bad track 0's. After using a bulk magnetic eraser on them though, they all format perfectly. I guess you really have to clear all the junk between sectors. I wonder if some of them were mac discs.
every single time I've been forced to bulk erase a disk to get a good format, the success was short lived and bad sectors returned in short order