How to repair a Hard drive

Once there is a long generic fail all other steps are academic to see if other warning signs were missed.
If the drive works and files are backed up it can be used until the terminal event.
Often slow performance (compromised read and or write) and unexpected shutdowns or restart lead to a replacement prior to the terminal event.

I had a Seagate C: drive that SeaTools for Windows disk test failed.

I then downloaded SeaTools Bootable and created a USB drive.

When I tried to boot from this drive the boot process hung on "Loading Extensions"

I noted that the USB was recognized as F: drive.
I then restarted the PC into Safe Mode with Command Prompt with the USB drive removed so it wouldn't boot into it.
I then plugged in the SeaTools Bootable USB.
I navigated to the F: drive

C:\WINDOWS\system32 F:
F:

I then navigated to F:\commandline_tools\Windows\Win64
From there I ran the following which looks like this:

F:\commandline_tools\Windows\Win64 SeaChest_GenericTest_171_1177_64s.exe -d \\.\C: --longGeneric --repairOnFly

It sequentially checked every LBA on the C: drive and when it found a bad block it fixed it. (It took a long time)
At the conclusion of the test it listed the bad LBA's it found and told whether they were repaired.

Looking at the directory there are many other test that can be run to help troubleshoot a disk.
Just execute the command without arguments and the options are given. I only wanted to repair the drive so I didn't investigate further.

The info in Seatools Bootable say it can only repair a disk if it is a Seagate Drive.

Then I rebooted the PC without the SeaTools Bootable USB drive and ran the SeaTools for Windows utility.
I selected the C: drive and ran the long generic test. (Again it took a long time).
The test Passed.

There is a way to boot to the SeaTools Bootable and get to a menu which will allow the same thing to be run but I don't know the command context which is probably Linux based.

Hope this helps someone ...