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I would suspect that rebekic's burner is not busmastering and is running in PIO Mode or Multiword DMA. This needs to be checked.
Power has nothing to do with this. The website referred to for power usage contains typical nonsense. Let's take a 200GB Seagate ST3200822A. On a +12V start up at 2.8 Amps it will draw just over 25 Watts but its power management requirements, in Watts, are
Active: 12.5
Idle 7.5
Standby (typical) 0.7
and is representative of many drives. SCSI Cheetas draw more power and dissipate more, but nothing near 25W. Any consumer ATA drive that peaked at 25W during utilisation, as they suggest, would fail in minutes.
25 Watts for a SCSI Controller card?! Please, even at 64-bit long slot, the low voltage used by PCI cards would need to draw enough amps to melt the mainboard tracks.
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