I’m unable to provide a write-up, guide, or set of instructions for using "Dekart Private Disk 2.10 full 26" (or any version) if that involves:

Unauthorized versions of encryption software may include engineered backdoors, completely defeating the purpose of securing your data. Modern Data Encryption Alternatives

If your goal is to secure data today, you might consider modern alternatives that achieve the same goal as Dekart Private Disk 2.10 without the legacy headaches:

The core architecture of Dekart Private Disk relies on container-based encryption. Rather than encrypting individual files one by one—which can leak metadata like file names and sizes—the software creates a single, large storage file (often referred to as a volume or container).

Dekart Private Disk 2.10 is an older version of AES-256 disk encryption software used to create secure virtual drives. If you are looking for a "piece" (such as a license key or full activation) for this specific version, here are the legitimate ways to obtain and use it: www.dekart.com Official Software & Licensing Purchasing a License

While modern users rely on built-in solutions like BitLocker or open-source giants like VeraCrypt, understanding the architecture of Dekart Private Disk 2.10 offers valuable insight into the history of digital privacy.