Glyph Technologies Knowledge Base :: What is the correct power-up sequence for hard drives and computers?

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What is the correct power-up sequence for hard drives and computers?

In general, the best practice is to power on peripherals, and then boot your computer. With FireWire and USB devices, it doesn't matter which is powered on first, the devices will be discovered by the computer once they are turned on. With SCSI devices, you must power the devices on first, or use a mounting utility to access them after the computer boots.