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A CD drive can have extraction errors when the data on the disc is not readable due to scratches or smudges. The drive can compensate by supplying a "best guess" of what the missing data was, then supplying the missing data.
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A view of a CD-ROM drive's disassembled laser system The movement of the laser enables reading at any position of the CD. The laser system of a CD-ROM drive. CD-ROM discs are read using CD-ROM drives. A CD-ROM drive may be connected to the computer via an IDE , SCSI, SATA, FireWire, or USB interface or a proprietary interface, such as the ...
Original CD-ROM drives could read data at about 150 kB/s, 1× constant angular velocity (CAV), [1] the same speed of compact disc players without buffering. As faster drives were released, the write speeds and read speeds for optical discs were multiplied by manufacturers, far exceeding the drive speeds originally released onto the market.
On every CD-ROM the sectors state their logical absolute and relative position in the corresponding sector-headers. The drive can use this information when it is told to retrieve or seek to a certain sector. Note that such information is not physically "hard-wired" into the CD-ROM itself but part of user-controlled data.
[88] Warcraft II was a runner-up for Computer Gaming World ' s 1995 "Strategy Game of the Year" award, which ultimately went to Command & Conquer and Heroes of Might and Magic (tie). The editors wrote that Warcraft II "will keep you glued to the computer for hours on end", and noted that it "could have won had the competition not been so strong."
For the first few years of its existence, the CD was a medium used purely for audio. In 1988, the Yellow Book CD-ROM standard was established by Sony and Philips, which defined a non-volatile optical data computer data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive.
The ability to extract the CD-Audio tracks is otherwise largely dependent on the disc drive used. The first obstacle is the "fake" Table of Contents (ToC), which is intended to mask the audio tracks from CD-ROM drives. However CD-R/RW drives, and similar, can usually access all session data on a disc, and thus can properly read the audio segment.