Firstly, RAID 0 would be what you seem to want, but the best rule of thumb is to use identical drives. If you coupled together those two drives, you would end up with a RAID array of 4.2GB (2 x 2.1GB). RAID 0 always amounts to the number of drives times the smallest drive. So bootm line on that one is NO!!! :smile:
Some reasons for slow ATA/100 performance may be:
DMA in device manager not enabled for the drive.
Drivers for the mobo ATA/100 ports are not up to the minute.
BIOS or RAID controller version, may be requiring an update, but don't go into this without getting to know how to go about it properly!
<b><font color=blue>~ Whew! Finished...Now all I need is a Cyrix badge ~ </font color=blue> :wink: </b>