|Thank you all !|
Till now I used only HDD Regenerator and indeed it was only "pretending" it regenerates bad sectors, in fact they reappered..
If you say the other ones are similar.. This is it.. Next time I'll buy a Western Digital or a Seagate..
Regarding what Derek said, it's probably related to the way the bad sectors appeared:
- in case of a singular event, like a power drop down, a kick, small drop, etc, the bad sectors might no reappear,
- in case of bad disk / mechanism, etc, if they started appearing, then.. the trend will continue..
I don't know.. I suppose..