Mark Knecht put forth on 7/3/2010 11:06 AM: >>> I have a newish machine - maybe 3 months old - which unreliably >>> finds its disk drives at each boot. Probably 40% of the time booting 1 >>> or more drives will be missing. Please provide the make/model of the PC. If it's whitebox or DIY please provide make/model of PSU, mobo and CPU. How many USB peripherals are powered by the PC? Are you powering a water cooling loop pump from the PC's power supply? Is this PC in a temperature controlled environment (A/C)? -- Stan -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html