[coreboot] XP is very slow on coreboot with SeaBIOS

Scott Duplichan scott at notabs.org
Fri Apr 1 22:14:45 CEST 2011

]Hi Rudolf,
]We use SATA hard disk. Maybe something else is wrong? Thanks.

Though your hardware connection is SATA, the software interface is
probably IDE. WinXP has no in-box AHCI driver for SB700 or SB800.
To make WinXP use AHCI with AMD requires pressing F6 during setup
and giving it a driver floppy.
Check device manager for a DMA mode such as 'Ultra DMA mode 6'
shown in the attached image.


]On Fri, Apr 1, 2011 at 3:54 PM, Rudolf Marek <r.marek at assembler.cz> wrote:
]> Hi,
]> Do you use sata or IDE? Maybe IDE  does not have DMA working in Windows. If
]> you use IDE try to find out if PIO is used or DMA.
]> Thanks
]> Rudolf

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