05-24-2016, 07:10 PM
I have never seen data come out of a drive like this before... instead of being normal flux data, it looks like a triangle wave. I guess as long as the bitcell times stay within the normal clocking window the data could be decoded... but I would say there is a definite problem with reads, and writes are not working at all. The write gate must be turning on, because you can see "something" that remotely looks like data. The data path is good or you would not get any data on the read side. When you use a8rawconv, are you using it to control the SCP board or converting an image that you dumped using SCP? a8rawconv will control the SCP directly if you want it to. Can you convert the exact same disk that you sent me the image of using a8rawconv?
Here is what you should probably do. Use the editor/analyzer to READ a track. Click on the Display Flux button. That will open the flux window and you can then see the changes to the flux data every time you READ a track. That data should look normal. Experiment with that to get use to seeing what flux data looks like, especially between different disks. Once you have done that, run the MEDIA test. You said it failed. Read the first failed track back in the analyzer and look at the flux data. You should see a perfectly straight line across the flux display. If you don't, or it's fuzzy then it's either the disk, drive or the cable.... or maybe even the density wrong. Have you tried switching the density with the pull-down menu?
I can certainly replace the SCP board - they have a lifetime warranty. I have had this same problem happen with two different people using 3.5" drives, and in both cases it was the drive (and one was the cable as well).
Here is what you should probably do. Use the editor/analyzer to READ a track. Click on the Display Flux button. That will open the flux window and you can then see the changes to the flux data every time you READ a track. That data should look normal. Experiment with that to get use to seeing what flux data looks like, especially between different disks. Once you have done that, run the MEDIA test. You said it failed. Read the first failed track back in the analyzer and look at the flux data. You should see a perfectly straight line across the flux display. If you don't, or it's fuzzy then it's either the disk, drive or the cable.... or maybe even the density wrong. Have you tried switching the density with the pull-down menu?
I can certainly replace the SCP board - they have a lifetime warranty. I have had this same problem happen with two different people using 3.5" drives, and in both cases it was the drive (and one was the cable as well).