Compaq 277958-001 manual See hyperlink

Understanding Computer Terms

lead-out

An area at the end of a session which indicates that the end of data has been reached. The first lead-out on a CD is 6750 sectors long. Any subsequent lead-outs are 2250 sectors, or about 30 seconds.

link

See hyperlink.

link block

A block, also known as a sector, of digital rubbish that is written each time the recording laser is turned on (before) or off (after) writing a track or a packet. See also Run-in/Run-out Blocks.

linked multi-session

A CD containing more than one session, in which all (or selected) data from the various sessions can be seen as if they had been recorded in a single session.

listserv

See mailing list.

logical block

The smallest addressable space on a CD. Each logical block is identified by a unique Logical Block Number (LBN), each of which is assigned in order starting from 0 at the beginning of the CD. Under the ISO 9660 standard, all data on a CD is addressed in terms of Logical Block Numbers.

logical format/logical structure/file system

A file system, such as ISO 9660, that translates the sector-by-sector view of a CD into a virtual tree of directories and files. This system makes it easier for both people and computers to use the information on the CD. UDF is another example of a file system that can be used to write CDs. See UDF.

log on

To gain access to a computer network or the Internet by entering a user name and password. See network.

Learning More About Your Computer 5–17