No. 9 of 25 ·Disk Diagnostic Software

MHDD

Linux

Freedom report

Two barsScore 6.4

MHDD is ranked #9 of 25 in disk diagnostic software on Freedom251. It runs on Linux. There is a free plan.

MHDD plans and pricing

MHDD Free Freeware · runs on pure MS-DOS · supports IDE, Serial ATA and SCSI hddguru.com · 29 Sept 2026

Purpose: MHDD is a freeware tool for low-level hard drive diagnostics and management.
Drive access: It supports IDE, Serial ATA and SCSI, and can access USB storage using USB-to-SCSI emulation drivers.
Diagnostics: It can scan drives, view SMART attributes, test drives and log scan results.
Drive operations: Commands include low-level erase, sector reading and writing, bad-sector remapping, and changing drive size with HPA.
Scripting: MHDD includes a simple scripting engine and supports batch files for running tests without an operator.
Distribution: The maker offers MHDD as a CD image, self-extracting floppy image, or archive of executable files.
Hardware requirements: The manual lists an Intel Pentium or higher, 4 megabytes of RAM, DR-DOS or MS-DOS 6.22 or higher, and a keyboard.
Compatibility limits: The manual says some AHCI controllers may not be recognized and suggests switching them to IDE or Legacy mode if needed.
Data safety: The manual warns that MHDD can cause damage or data loss and advises backing up a drive before erase or remap operations.
Support: The product page links to an MHDD discussion forum, FAQ and documentation.
Intended users: The manual says MHDD is not easy for users without deep knowledge of how disk drives work.
Price from: Free

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