HP Visualize J5000 hp Visualize J5000, J7000 workstations owner's guide (a4978 - Page 93

CD Media, Caring for CDs

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CAUTION NOTE Using Your CD Drive Operating the CD Drive CD Media CDs are 120mm (4.7 in.) in diameter, and use one data surface with a capacity of approximately 600 megabytes. The data surface contains pits and flat spots arranged in a continuous spiral track, which is read at a constant linear speed (and hence a variable rotational speed). Originally, all CDs were CD-ROMs; i.e., you could access files and data stored on them, but could not write files or data to them; it was indeed a CD-ROM; i.e., Read-Only Memory. Since then, writable, and even rewritable CDs ("CD-RAMs") have come available; your workstation can read any of these types of CDs, but you cannot write CDs with your workstation without additional hardware and software. CD data disks are identical to audio compact disks (CDs) except that they store computer data and information. Handle CDs by the edges only. Always be sure a CD is either in the CD drive or its protective case or envelope when not in use. If you must set it down when it is not in its protective case or envelope, lay it down with the shiny side up (labelled side down); this will lessen the chance of scratch damage to the more-sensitive data side. Putting CDs back into their cases or envelopes will lessen the chance of exposing the disk surface to dust, fingerprints, and objects that could scratch the CD. These factors will reduce the reliability of the read head in the CD drive. Caring for CDs Observe the following guidelines to help prevent data loss and prolong the life of your CDs and drive: • Use CDs in a clean environment to prevent dust particles from scratching disk surfaces. • Store CDs in a cool, dry place to prevent moisture and heat damage. • Don't try to clean the surface of a CD with cleaning solvents, as some cleaning solvents may damage the disk. You must mount a CD after loading it into the drive. Refer to "Mounting and Unmounting a CD" on page 98 for instructions on mounting a CD. Chapter 4 93

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Chapter 4
93
Using Your CD Drive
Operating the CD Drive
CD Media
CDs are 120mm (4.7 in.) in diameter, and use one data surface with a
capacity of approximately 600 megabytes. The data surface contains pits
and flat spots arranged in a continuous spiral track, which is read at a
constant linear speed (and hence a variable rotational speed). Originally,
all CDs were CD-ROMs; i.e., you could access files and data stored on
them, but could not write files or data to them; it was indeed a CD-ROM;
i.e., Read-Only Memory. Since then, writable, and even rewritable CDs
(“CD-RAMs”) have come available; your workstation can read any of
these types of CDs, but you cannot write CDs with your workstation
without additional hardware and software.
CD data disks are identical to audio compact disks (CDs) except that
they store computer data and information.
CAUTION
Handle CDs by the edges only. Always be sure a CD is either in the CD
drive or its protective case or envelope when not in use. If you
must
set it
down when it is not in its protective case or envelope, lay it down with
the shiny side up (labelled side down); this will lessen the chance of
scratch damage to the more-sensitive data side. Putting CDs back into
their cases or envelopes will lessen the chance of exposing the disk
surface to dust, fingerprints, and objects that could scratch the CD.
These factors will reduce the reliability of the read head in the CD drive.
Caring for CDs
Observe the following guidelines to help prevent data loss and prolong
the life of your CDs and drive:
•
Use CDs in a clean environment to prevent dust particles from
scratching disk surfaces.
•
Store CDs in a cool, dry place to prevent moisture and heat damage.
•
Don’t try to clean the surface of a CD with cleaning solvents, as some
cleaning solvents may damage the disk.
NOTE
You must mount a CD after loading it into the drive. Refer to “Mounting
and Unmounting a CD” on page 98 for instructions on mounting a CD.