Description: The curse of CIH destroying harddisk,IOS_SendCommand is a very low call in Win95,commonly,it s used for IO low operation,e.g,read,write,lock,format.generally you can only use it in Ring 0 or virtual machine,using it in normal programme should be herrible.this VXD call have many function,also complex.it has just a few parameter,just the address of BCB,IOR,BDD or DCB.but these struct contain many information,the struct itself also very complex.CIH just use the IOR struct,it contains nearly 20.
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