MSI P55A-G65 (intel P55 chipset + Hitachi HDS721010CLA332 + AHCI mode) - same problem (Windows7 prof x64). The APM enable setting does not store and goes back to disable after windows reboot.
Unfortunately, CrystalDiskInfo does not support AAM/APM control on JMicron JMB360/NVIDIA's AHCI Driver.
None
Please enable AAM/APM adaption feature. http://crystalmark.info/software/CrystalDiskInfo/manual-en/AdvancedFeatures.html
When the driver reports disk as "SCSI Disk Device", SMART values are read but I cannot set APM value. (all controllers in AHCI only mode - no RAID: JMicron JMB360 controller - jraid.sys driver, NVIDIA nForce Serial ATA Controller - nvstor64.sys driver)
hdparm has the same problem: hdparm - get/set hard disk parameters - version v6.9-20070516 (Win32) hda: setting Advanced Power Management level to 0xFE (254) HDIO_DRIVE_CMD failed: Function not implemented
I must rollback to msahci.sys to be able to set the value (via CDI or hdparm). This means losing hot-swap an maybe other capabilities.