Hi I'm not really an expert on the technical details if the driver but I'm running an PDC20265R with a relative good success for some time now and i noticed the same problems you mentioned when I tried to use the acpi patch for kernel 2.4.19... and there is no need for scsi in the kernel if you use the opensource ataraid driver. The only thing I was not able to get working was booting win2k from the array if the lilo is installed in the MBR of the array. I hope it helps... mfg Albert -- Albert Dengg <a_d@xxxxxx>