NucleoDyne Systems, Inc.

"AMAC(Accessible Max Address Configuration feature set) is optional in ACS3 Hdparm code filtels each commands by ACS verion, but it has to be filtered by command support bit. Because even if drive doesn't support AMAC feature set, but supports ACS3, it's not an error case because it is optional. Our proposal is below: Host Protected Area(HPA) feature set F9h (Obsolete in ATA-8 ACS3) : Supported by XXX drive SET ACCESSIBLE MAX ADDRESS EXT 78h (Optional in ATA-8 ACS3) : Not supported by XXX drive"...

"AMAC(Accessible Max Address Configuration feature set) is optional in ACS3 Hdparm code filtels each commands by ACS verion, but it has to be filtered by command support bit. Because even if drive doesn't support AMAC feature set, but supports ACS3, it's not an error case because it is optional. Our proposal is below: Host Protected Area(HPA) feature set F9h (Obsolete in ATA-8 ACS3) : Supported by XXX drive SET ACCESSIBLE MAX ADDRESS EXT 78h (Optional in ATA-8 ACS3) : Not supported by XXX drive"...

Here is a request from a customer: "AMAC(Accessible Max Address Configuration feature set) is optional in ACS3 Hdparm code is filteling each commands by ACS verion, but it has to be filtered by command support bit. Because even if drive doesn't support AMAC feature set but support ACS3, it's not against because of optional. Host Protected Area(HPA) feature set F9h (Obsolete in ATA-8 ACS3) : Supported by next product SET ACCESSIBLE MAX ADDRESS EXT 78h (Optional in ATA-8 ACS3) : Not supported by next...