When I reboot FC2, my IDE hard disc spins down, only to spin up again shortly afterwards. However, my new serial ATA disc does not spin down. I don't think any drives should spin down for a reboot as this is simply increasing wear and tear. Also, does the fact that the SATA drive behaves differently also mean that it isn't spinning down before poweroff? In that case, it must be relying on the drive's automatic parking feature. I've noticed that ACPI is now controlling the poweroff sequence. Where is this configured? I couldn't find any clues by looking at the shutdown scripts. Thanks for your help! Jonathan