Nvidia NFORCE 650I - Manual (Page 52)

Mainboard nForce 650i Ultra
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Install Windows ® XP
1. During the Windows ® XP installation, a “Windows Setup” screen will prompt you with
“Press F6 if you need to install third party SCSI or RAID driver”. Press <F6>.
2. Press <s> when setup asks if you want to specify an additional device.