MHDD is the most popular freeware application for low-level HDD diagnostics.
Interfaces Supported:
MHDD supports these interfaces: IDE, Serial ATA, SCSI. Also there is a possibility to access an USB storage, there are drivers for emulation (USB->SCSI).
What can MHDD do?
This software can make precise diagnostic of the mechanical part of a drive, view SMART attributes, perform Low-level format, bad sector repair, different tests and tens of other functions.
Platform:
· Intel Pentium or higher CPU
· 4 megabytes of RAM
· DR-DOS, MSDOS version 6.22 and higher
·…
For example: Seagate Barracuda 7.7200 40Gb. When scan it by MHDD almost all surface looks perfect, but drive have 1 bad block (or little bit more) in first sectors. How to fix the problem?
First rule: if data is important you must save it first, before do any “repair” or you can lose you data in this drive at any moment.
Now, then data saved we can start drive diagnostic. If drive have few bad blocks we can divide situation to the following case:
Universal:
1) software damaged – this is actually not damage, but sectors with…
MHDD is the most popular freeware program for low-level HDD diagnostics.
MHDD supports these interfaces: IDE, Serial ATA, and SCSI. Also there is a possibility to access USB storage; there are drivers for emulation (USB->SCSI).
This software can make precise diagnostic of the mechanical part of a drive, view SMART attributes, and perform Low-level format, bad sector repair, different tests and tens of other functions.
More information on: http://hddguru.com/content/en/software/2005.10.02-MHDD/
Interfaces Supported: 
