Acer Altos 500 aa500ug.pdf - Page 53
Advanced PIO Mode, Hard Disk 32-Bit Access, DMA Transfer Mode, CD-ROM Drive DMA Mode, Disabled. - drivers
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Advanced PIO Mode When set to Auto, the BIOS utility automatically detects if the installed hard disk supports the function. If supported, it allows for faster data recovery and read/write timing that reduces hard disk activity time. This results in better hard disk performance. To disregard the feature, change the setting to Disabled. The default setting is Hard Disk 32-Bit Access Enabling this parameter improves system performance by allowing the use of 32bit hard disk access. This enhanced IDE feature works only under DOS, Windows 3.x, Windows 95, and Novell NetWare. If your software or hard disk does not support this function, set this parameter to Disabled. The default setting is Enabled. DMA Transfer Mode The Ultra DMA and Multi-DMA modes enhance hard disk performance by increasing the transfer rate. However, in addition to enabling these features in the BIOS Setup, both the Ultra DMA and Multi-DMA modes require the DMA driver to be loaded. By setting this parameter to Auto, BIOS automatically sets the appropriate DMA mode for your hard disk. The default setting is Auto. This parameter appears only when you are in the Advanced Level. CD-ROM Drive DMA Mode Set this parameter to Enabled to enable the DMA mode for the CD-ROM drive. This improves system performance since it allows direct memory access to the CDROM. To deactivate the function, set the parameter to Disabled . The default setting is Disabled. Chapter 2 - BIOS Utility 2-15
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