Unlocking password protected disks in Windows

I’ve successfullt entered an ATA Password (called HP DriveLock in my HP laptop) for my Intel 320 SSD using BIOS settings. As a result, my laptop wants me to enter the ATA Password every time I start it up. By design, the password is stored in the SSD and not in the computer’s BIOS.

Suppose I want remove my SSD and connect it to another computer using an eSATA cable or cabinet. If the existing boot disk in this computer have a different ATA password set or no password set at all, I would of course like to enter the password at a later stage (from within Windows) to make the disk accessible.

According to the help system of Rapid Storage Technology Application (RST), I should be able to enter the ATA password by selecting the appropriate disk and then click Unlock.

However, the Unlock button or link isn’t visible in RST. According to chapter 16.2 in the Intel RST OEM Technical Guide (http://www.station-drivers.com/telechargement/intel/sata/OEM_Technical_Guide_10_5_rev1_01.pdf), the unlock button or link is hidden by default but can be enabled by setting bit6 “HDD Unlock (HDDLK)” of the ‘Intel RST Feature Capabilities’ register in the SATA controller MMIO space (http://pdf.directindustry.com/pdf/intel/intel-6-series-chipset-and-intel-c200-series-chipset-datasheet/33710-176344-_601.html).

Can I make the required changes myself somehow, or is this setting only available to the manufacturer? Does anyone know?