GSmartControl vs MHDD

GSmartControl is a graphical interface for smartctl, used to inspect drive SMART data and run tests. It displays drive identity, capabilities, attributes and device statistics, and automatically highlights anomalies. Users can enable or disable SMART and adjust global or per-drive smartctl options. Saved smartctl output can be opened as a read-only virtual device. The software supports ATA drives, including SATA and PATA, and NVMe drives, plus some devices behind USB bridges and selected RAID controllers. SCSI and SAS drives are not supported, though some information about them may appear. GSmartControl is free software under the GNU General Public License version 3. Downloads include Linux packages, Windows installers and portable archives, FreeBSD ports, macOS packages and source code. smartmontools is a runtime requirement, but official Windows packages include the required software. Useful operations require root or Administrator privileges because operating systems restrict direct hardware access. Supported systems listed include Linux, Windows, FreeBSD, NetBSD, OpenBSD, DragonFlyBSD, macOS and Solaris; QNX support is described as untested.

MHDD is a freeware utility for low-level hard drive diagnostics and management. It supports IDE, Serial ATA and SCSI drives, and can access USB storage through USB-to-SCSI emulation drivers. Diagnostic tools scan drives, show SMART attributes, run tests and log scan results. Drive operations include low-level erasing, sector reads and writes, bad-sector remapping, and changing drive size with HPA. A simple scripting engine and batch-file support allow tests to run without an operator. The maker offers the software as a CD image, self-extracting floppy image or archive of executable files. The manual lists an Intel Pentium or higher, 4 megabytes of RAM, a keyboard, and DR-DOS or MS-DOS 6.22 or higher as requirements. It notes that some AHCI controllers may not be recognized, with IDE or Legacy mode suggested if needed. The manual warns that MHDD can damage a drive or cause data loss, particularly around erase or remap operations, and advises backing up first. It also says the tool is difficult for people without deep knowledge of disk drives. MHDD is listed at free.