I saw the option of low-level format in httoolbox on the A2091 install disk. I"m assuming that process will map out bad blocks automatically if I select it?
I'm assuming the prog on aminet you listed does the same? If yes, I'll give it a shot. The smarter thing for me to do would be to buy the SCSI2SD which I'm going to end up doing.
I have KS 2.x roms I *think*, just not installed.
Zipper may be correct about the HDToolBox not issuing a correct low level format command for a more recent drive (post CBM), I don't know, but to try the other tool won't hurt either. I'm assuming there's no data you need from the drive in which case you have nothing to lose. The Low Level Format should re-assign any bad disk blocks on to good spare portions of the disk so that the Amiga only sees a whole good disk (in essence all blocks will look good to the Amiga).
Edit: If the software doesn't work under 1.3, you could always softkick 2.0 or 3.1.