11.8 SCSI Hard Disk Using DMA

   If your  computer has  a SCSI  hard disk  that  uses Direct  Memory Access
   (DMA), you must include the following entry in the [386Enh] section of the
   SYSTEM.INI file:

     VirtualHDIRQ=Off

   In addition, you must  have SMARTDrive installed and  you must NOT disable
   double-buffering by  removing  or  remarking  out  the  \D  option in  the
   CONFIG.SYS file.


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