guys, there was a new feature concerning power management for the hard disks when running Seven: "AHCI link power management" . I use to have it in the beta, but for some reason not anymore in the RC.
AHCI is still enabled in the bios, and the registry key that shows it was detected by the OS is set to the correct value: HKLM\System\CurrentControlSet\Services\Msahci (start=0). If AHCI wasn't detected anyway the OS wouldn't boot. So the question is, do you guys still have the setting available in power management in the RC ?
I asked the question in another forum and someone told me he doesn't have it anymore either. So that's either a bug in the RC or the feature was removed...
Windows Vista-based computer that uses a SATA hard disk that does not support Host-Initiated Link Power Management.url:
I would create a restore point and try the Vista fix. It's possible a RC update will do it later. You can add your remarks to the 'comments' thread.
You can add your experience, to help the dev team identify problem devices.
Have Comments about Windows 7 RC (Do not post questions here).url:Rating posts helps other usersMark L. Ferguson MS-MVP
if useful at all and relevant to the topic here, I posted recently in this thread too:
getting recurrent hard disk clicks and hard disk led flashing all the time and very regularly, in both the beta and now the RC. Can't tell if that's AHCI power management related, hard disk heads reparking again and again when the disk is idle. I actually tried the Vista fix, link you gave me in your post, and the clicks seem to have disappeared now that I have added that registry key. But the hdd led keeps flashing all the time.