Someone can guide help me selfscan.

I bought a tool of SD, HD Doctor for WD. I used selfscan repair bad sectors. But I really do not understand it.

With those HDD only 4 blocks red (WD1600AAjs _ 00B4A0), I can not put it into P or G list.
I made selfscan, but in 20h selfscan more run at a single point. I stop it, check the HDD with MHDD, it almost spoiled the entire surface. Again should know that, before selfscan, my HDD is very good with MHDD.
With such a good HDD, I really do remorse have used selfscan, it nearly killed off my HDD. I really do not understand.
A sculpture, selfscan almost run very arbitrary. It only runs when it wants, Although I have tried to follow all instructions.

With a variety of HDD of I made selfcsan failed, I really stress.
Someone please help.
Sorry for my bad English!

This happens when using something either undocumented or not understood.

1) Would you extinguish a candle with a nuclear bomb ? Think no. For 4 UNCs it was not advisable to run such procedures.

2) On WD and on unstable drives this kind of procedure CAN actually kill the drive, you have to judge what to use, when and how.

3) I can't tell you if the tool is starting correctly the procedure or it's you doing something wrong, one thing is sure - I don't use SD for it , but the time required is much less than 20 hours and actually only few drives did not survive but they were borderline if not already worn out.

Hope you'll get some support from them, otherwise you'll have to learn or discover if it works or not by trial and error.

Hi BlackST

Thanks to you I understood more problems. I want to make a test with SD.. it differs slightly from the imagination
Thanks a lot

Hi vkhanhduy2003 , just to be clear, you areexperimenting with WD DOC, and the drive you are working on is for testing only? I think you missed a few steps.

Hi SquaL
Yes, I want to clear, we can not do something that we do not understand on the important stuff and take too much time so, I'm not crazy when selfscan with HDD 4 UNC, There are many options, I just want to test it

Never miss a step with the technical remote support SD . I think with such costs SD is good, but the feeling it had problems with bad sector repair ?
In a month , I killed 15 HDD with "rewrite servo" and "selfscan". Oh my god… I've never destroyed so much. Maybe I should reconsider what I was doing.

It is very easy to "destroy" disk. Practice practice practice on drives that you dont need. The manuals that comes with SD doc are not the greatest in English. It would be good for you to invest in other manuals. Before you experiment, be sure to back up ROM and all key modules and tracks.

No other manual can help. If the goal is to refurb drives would be better to BUY some training or KH. And I would forget SD also (sad but true!).