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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