On 2013/10/16 15:24, Phillip Susi wrote: > On 10/16/2013 3:19 AM, Peter D. wrote: >> Hi, > >> Is it deliberate that dd can not read from, or write to the host >> protected area? Or is it a bug? > > The HPA is a feature of the drive, not the OS or software, so dd has > no idea whether or not there is one and can not "get around" it. To > unlock the full capacity of the drive you have to send commands to the > drive. You can have the libata driver do this by setting > libata.ignore_hpa=1. Pardon me for jumping in here, but is there an option in OSX that can do similarly? (I know, wrong list & all that jazz, maybe I can get lucky)