m0,2,2,22 is for 7200.11 drives only (known 0 LBA problem) you should NEVER use that command on other drives or you risk partial access + traslator damage.
DM series is known to have several issues from bad heads and media damage to media cache issues and sometimes some sysfile patching is required to clone7image the drive.
Only thing that you can do by yourself is to attempt to clone the bad drive with hddsuperclone or ddrescue.
If it doesn't work you need to patch the firmware assuming heads and media are ok.
If the data on the drive is important as you say do consider the use of a professional data recovery firm !
Regards.
Wow....HD Doctor for seagate is NOT a option at moment. How much cost it?
So, there is some freeware tools or command that I can use for my seagate drive?
How I can update firmware for this drive If there isn't firmware available on seagate website? There is another place where I can find it? Assuming that I find the firmware, how can I update the hd, such as it can not be read?
Assuming that I got a clone drive with hddsuperclone or ddrescue, what's the next step to the clone drive?
Thinking more about this issue, you have been a gentleman with many advice. Please, could you send for my email a list of mandatory tools that I need consider to make a professional Kit for data recovery/forensic. I will consider to help people on my region with that. If there is any documentation can you be share with me. It is welcome my friend !
Send my HDD for a professional data recovery firm is NOT a option. Therefore, I'm a difficult region where post office service is very bad.
Then, before you reply m last message I open a new topic with my HDD issues where there are full information. The title is '
Seagate ST500DM002 Barracuda 'Failed to read sector '0' '
Regards,