You can download HDD Safeguard 3.0 from our software library for free. HDD Safeguard lies within Security Tools, more precisely Privacy. This tool was originally developed by USB Safeguard, Soft.
From the developer:
HDD Safeguard is a portable software that allows you to protect your private files with a password on your external big drive using the secure AES 256 bits key.
You may want to check out more software, such as HDD Observer, HDD Temperature Pro or HDD Temperature Enterprise, which might be similar to HDD Safeguard.