Hitachi master password

All solutions point to having to contact the drive manufacturer or laptop manufacturer. There is good explanation in the Tom's Hardware thread at the end, about a 'master password' ...

4.June.2014
Hard disk security primary master lock
harddisk security primary master lock

What OS are you using?

not sure if this link will help you out but have a look.... Acer Hard Disk security Google Search

You need access to a computer with Internet access so you can download a Hard disk password unlock program.
HARD DRIVE PASSWORD UNLOCKING - Purchase
http://www.hddunlock.com/purchase/ A-FF HDD Unlock Wizard (HDD Password unlocking - Free)
http://www.hddunlock.com/download/

The drive is locked by a BIOS level Hard drive password. You can either contact Acer about a master password or replace the HDD since the password data is stored on the drive itself
http://www.fixya.com/support/r3894261-remove_bios_or_hdd_password_from_acer

you have set a password for your hard drive and if you dont enter it the computer wont boot

you restart your laptop and go in to bios setup check the bios setting and hdd security setting in the bios if u cant found than press "F9" key in to bios and press "F10" from you key board and exit....

configure the os press F2 then set to default settings

Hello,

Bad news, someone has set the hard drive security option. The hard drive is hardware locked and can't be unlocked without the password. Not even putting the hard drive in another machine will bypass the security. You can send the drive to hitachi repair in Dallas, Tx. for recovery but it is very pricey.

This is a "security" feature, to allow _only_ the person who knows the password for the encrypted disk-drive to use (and boot from) the unit. There's no way to bypass this security.