how to use an external HDD USB port in DOS mode with MHDD

[tingotech]

I want to use MHDD in USB boot for an external HDD USB Toshiba. I need to recover bad sectors. Do you have any idea how to do it?
I read about Magic Boot Disk but can't boot on USB.

ACtually MHDD only read SATA ports, not USB, please I need help

[Arch Stanton]

What do you mean 'recover bad sectors'? You mean repair them? Or need to recover data?
If repair then forget it, get a new one. If you need to recover data then cloning is a better route (ddrescue, hddsuperclone).