So I'm not new to dealing with SED locked WD drives, but this one has me confounded.
On arrival, the drive's PCB was totally dead. I had to physically remove the ROM and read it in an external programmer. With the ROM code programmed to a SATA board, the drive was then able to ID and had sector access. When I tried imaging, it seemed like possibly one head wasn't reading so I wanted to generate a headmap for it.
I followed the normal processes. Blocked preamp, block SA access in ROM, ldr/dir upload, unchecked SED in drive ID and also did the slow responding fix on it just for good measure. Was then able to generate headmap in DE and all seemed well.
But, then I now have no sector access anymore. I tried turning SED back on, still no sector access. I tried undoing the slow responding fix, still no sector access. I even took and read all the modules from copy 1 of the SA and wrote them back to copy 0. Yet, still, it's got no sector access whatsoever.
All modules read from both copies and all test out as good.
Maybe it's just weak heads, but at first it definitely didn't seem like it. It was reading really fast in some areas, so this makes no sense to me.
What might I be missing?
On arrival, the drive's PCB was totally dead. I had to physically remove the ROM and read it in an external programmer. With the ROM code programmed to a SATA board, the drive was then able to ID and had sector access. When I tried imaging, it seemed like possibly one head wasn't reading so I wanted to generate a headmap for it.
I followed the normal processes. Blocked preamp, block SA access in ROM, ldr/dir upload, unchecked SED in drive ID and also did the slow responding fix on it just for good measure. Was then able to generate headmap in DE and all seemed well.
But, then I now have no sector access anymore. I tried turning SED back on, still no sector access. I tried undoing the slow responding fix, still no sector access. I even took and read all the modules from copy 1 of the SA and wrote them back to copy 0. Yet, still, it's got no sector access whatsoever.
All modules read from both copies and all test out as good.
Maybe it's just weak heads, but at first it definitely didn't seem like it. It was reading really fast in some areas, so this makes no sense to me.
What might I be missing?