Glossary

Green Book

Specification for CD-I.

High Sierra/High Sierra Format

The Hotel in Nevada, USA where in 1985 the foundation was laid for determining the file systems for CDs. The efforts of the group which came to be known as the "High Sierra Group" led to the standard ISO 9660, the most common file system for CDs. A CD that conforms to this standard is at times still referred to as a "High Sierra" CD. The original High Sierra format has almost died out; as a rule, ISO 9660 is used instead.

Image File

see physical image

ISO 9660

ISO 9660 describes the requirements a CD file system has to fulfill. This allows a CD to be used universally.

Only the capital letters from A to Z, the digits 0 to 9 and the underscore symbol are permitted for file and directory names. Diacritical marks (Ä, Ö, Ü), foreign characters and punctuation marks (ß, ?, ! etc.) as well as hyphens are not permitted. The filename can have a max. of 8 characters, the extension only up to 3. The filename must be at least one character in length, for example 'A'. A version number (1 to 32767) can be appended (for example 'A.B;1'). A maximum directory hierarchy of eight levels is permitted whereby the root is considered the first level. The ISO 9660 employs specifications of the High Sierra Group and is for that reason also called the High Sierra format. There are also other file systems ( for example, Joliet for Win95 or HFS for Apple Macintosh) which, however, can only be recognized on these types of systems.

Joliet

CD file system that supports long filenames and can be used under Windows

95.For full compatibility to DOS, an ISO 9660 file system must be created. This is a part of the complete Joliet system.

Lead-In

The lead-in is a data area at the beginning of a CD-R session. This area contains the directory (table of contents TOC) of a session. The lead-in is written together with the lead-out of a session. Every lead-in uses 4500 sectors (approx. 9 MB) on the CD.

Lead-Out

The lead-out marks the physical end of a session and does not contain any data. It is written together with the lead-in. The first lead-out of a CD uses 6750 sectors (approx. 13 MB), all following ones 2250 sectors (approx. 4 MB).

GB

5

21

Page 20 Page 22
Page 21
Image 21
Freecom Technologies II manual Glossary
Page 20 Page 22

II specifications

Freecom Technologies II is a leading company in the realm of data storage and management solutions. Known for its innovative approach and commitment to providing high-quality products, Freecom Technologies II has carved a niche for itself in the tech industry. This article delves into the main features, technologies, and characteristics that make Freecom Technologies II a standout player in the market.

One of the most significant features of Freecom Technologies II is its extensive range of storage devices. From external hard drives to high-capacity SSDs, the company offers products that cater to both personal and professional needs. The devices are designed to provide fast data transfer speeds, ensuring that users can access and store their information quickly and efficiently. The integration of USB 3.0 technology in many of their devices enhances performance, making them suitable for data-intensive applications.

In addition to storage solutions, Freecom Technologies II also emphasizes user-friendly designs. Their products are often compact and portable, enabling users to carry their data wherever they go. This emphasis on portability is complemented by built-in security features, including encryption capabilities that protect sensitive information from unauthorized access. Users can rest assured knowing that their data is safe, whether at home or on the move.

Another characteristic that sets Freecom Technologies II apart is its commitment to sustainability. The company actively seeks to minimize its carbon footprint by employing eco-friendly materials in its product design and packaging. This not only benefits the environment but also appeals to a growing segment of eco-conscious consumers.

Technologically, Freecom Technologies II pushes the envelope by seeking innovative solutions to data management challenges. The company is increasingly investing in cloud storage technologies, offering users backup and synchronization services that integrate seamlessly with their existing products. This integration allows individuals and businesses to manage their data more effectively, blending local and cloud-based solutions.

Customer support is also a cornerstone of Freecom Technologies II's business model. With dedicated teams available to assist users with troubleshooting, installation, and maintenance inquiries, the company fosters a positive relationship with its customer base.

In summary, Freecom Technologies II stands out for its diverse range of high-performance storage solutions, commitment to user-friendly design, eco-friendly initiatives, and robust customer support. As technology continues to evolve, Freecom Technologies II remains at the forefront, adapting to the changing needs of users while maintaining its dedication to quality and innovation.
Top Page Image Contents