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![]() ![]() It is very important to understand that you have to spend several hours (minimum) before you If you already have in depth knowledge of how disk drives work, read the (very old version of the ) ATA/ATAPI standard: If you don't have in depth knowledge of how disk drives work, read the (very old version of the ) ATA/ATAPI standard: Knowing what to have MHDD do is not easy! Some important information MHDD is very easy to use. The CD is removable and you can insert a different CD having an editor or other programs.įirst run. Scripts/test Sample script for sending commands ![]() Mhdd.hlp used by MAN to describe commandsīatch/sample.mba Sample batch script to run tests without intervention ![]() MHDD package contents mhdd.exe Main executable Take the executables and build your own system.Floppy image can be written under Windows 2000/XP.Write a bootable CD from the ISO image with any CD burning software.MHDD is available as CD image, as self-extracting floppy image or as an archive. Maximum sector size for such devices is 4096 bytes Any SCSI removable media such as tape, CDROM.SCSI drive with sector size 512-528 bytes.IDE or Serial-ATA drive with size smaller than 8,388,607 TBytes, i.e.IDE or Serial-ATA drive with size bigger than 600Mbytes, i.e.UDMA/RAID controllers integrated into motherboard as additional chip.PCI UDMA boards (detected automatically): HPT, Silicon Image, Promise, ITE,ĪTI and so on.Any integrated into motherboard north bridge (addresses: 0x1F x for primary channel, 0x17 x for secondary channel).DR-DOS, MSDOS version 6.22 included on CD image.If the drive under test is on the Primary IDE interface use /ENABLEPRIMARY switch. Primary IDE as it usually used to boot DOS and run MHDD. That is why, by default, MHDD does not work with This will cause data loss on both devices on that channel! There is no way to block or trace MSDOS You are going to use to diagnose drives! DOS (SMARTDRV.EXE, for example) mayĪccess any drive at the same moment as MHDD. MHDD works directly with IDE or Serial ATA controller so it does not knowĪbout partitions, file systems, BIOS (motherboard) limitations, etc.įor SCSI drives MHDD uses DOS ASPI driver (incuded).ĭo not run MHDD from the hard drive that is on the same physical IDE channel (cable) You can turn on your drive after DOS boots (A small risk of drive damage exists if you are not careful) The main difference: MHDD does not use DOS or BIOS functions or interrupts and works even if the BIOS does not detect the drive. Program MSDOS BIOS IDE/SATA controller Hard disk This diagram shows how a DOS program talks to the drive. After everything is done BIOS returns result to DOS. The BIOS looks into its tables to find where that drive is attached, checks ranges and then starts sending commands to the drive. When DOS needs to read a sector from a drive , You can issue a sequence of commands using simple scripting. Other drive parameters such as acoustic management, security, Host Protected Area. MHDD now includes features to access raw sectors, view S.M.A.R.T. It was able to make surface scan ofĪn IDE drive in CHS (Cylindar, Head,Sector) mode. The first version was released in 2000 by Dmitry Postrigan whose main objective was to develop well-known and trusted HDD diagnostic tool. MHDD is the small and powerful freeware tool to work with hard drives at the lowest possible level. NOPINGPONG, /DISABLEBIOS, /DISABLESCSI, /ENABLEPRIMARY and /RO show the Original (factory) size of the drive RHPA.MHDD very low level Hard Disk diagnostic tool _ 151013 _ MHDD Very low level Hard Disk diagnostic tool.ĭocumentation rewritted 01/10/09 by Dennis German again and again.Ĭommands are listed here from simplest to most dangerous ![]()
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