I have just bought a Hitachi Travelstar 7K200 with Bulk data encryption. You have some details here: http://www.hitachigst.com/hdd/support/bulk_faqs.htm#a2
My Sony Vaio VGN SZ5MN/B doesn't have the HDD password in bios. It has only the BIOS password.
I've tried to update my laptop bios unsuccessfully, and right now the only solution to use this hdd feature is adding ATA Security eXtension to my BIOS.
Please help me to add this feature, I've read several time the introductions on his website but it's to hard for me.
Those are my laptop spec:
Intel(R) Core(TM)2 CPU T5600 @ 1.83GHz
System Manufacturer Sony Corporation
System Name VGN-SZ5MN_B
Mainboard Vendor Sony Corporation
Mainboard Model VAIO
BIOS Vendor Phoenix Technologies LTD
BIOS Version R0112N0
BIOS Date 04/12/2007