I have just read another thread, in which there was a link to sorting out ASPI related issues. Apparently when you install XP, it doesn't automatically install.
"Short for Advanced SCSI Programming Interface, an interface specification developed by Adaptec, Inc. for sending commands to a SCSI host adapter. ASPI has become a de facto standard that enables programmers to develop applications and drivers that work with all ASPI-compatible SCSI adapters."
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Yep ASPI layer for IDE. Its the ONLY way a IDE drive can burn data and read in I/O format. Hence IDE drives are stupid-literally. Cause scsi does this on hardware level.