Acer power sx/sxb/sc manual Auto

Parameter	Description	Options
Hard Disk Block Mode	This function enhances disk performance depending	Auto or Disabled
	on the hard disk in use. If you set this parameter to
	Auto, the BIOS utility automatically detects if the
	installed hard disk drive supports the Block Mode
	function. If supported, it allows data transfer in blocks
	(multiple sectors) at a rate of 256 bytes per cycle.
Hard Disk 32-bit Access	Enabling this parameter improves system	Enabled or Disabled
	performance by allowing the use of the 32-bit hard
	disk access. This enhanced IDE feature works only
	under DOS, Windows 3.x, Windows 95/98, Windows
	NT, and Novell NetWare.
Advanced PIO Mode	When set to Auto, the BIOS utility automatically	Auto, Mode 0, 1, 2, 3 or 4
	detects if the installed hard disk supports the function,
	it allows for faster data recovery and read/ write
	timing that reduces hard disk activity time. This
	results in better hard disk performance.
DMA Transfer Mode	The Ultra DMA and Multi-DMA modes enhance hard	Auto
	disk performance by increasing the transfer rate.	Multiword Mode 0, 1, 2
	However, besides enabling these features in the	Ultra Mode 0, 1, 2, 3, 4
	BIOS Setup, both the Ultra DMA and Multi-DMA
		Disabled
	modes require the DMA driver to be loaded.

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