Encarta '94: Testing CD-ROM Drive for File Access
  
PSS ID Number: Q133216
Article last modified on 03-22-1996
 
1994
 
WINDOWS
 

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The information in this article applies to:
 
 - Microsoft Encarta for Windows, 1994 edition
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SUMMARY
=======
 
Because of physical read limitations of some CD-ROM drives, the Encarta CD-
ROM may deny access to some files and folders. This article lists those
files and supplies a method to test your CD-ROM drive.
 
MORE INFORMATION
================
 
The CD-ROM drive may have difficulty reading the final three
folders, listed below, from the Encarta CD-ROM:
 
Folders                            Location On Disk
-------                            ----------------
 
Mmcat\Dibs2                        642-643 MB
Mmcat\Dibs1                        640-642 MB
Encyc94\Mm\Avi                     564-639 MB
 
To test for specific drive-capacity limitations, try to access the
following files:
 
Files                             Location On Disk
-----                             ----------------
 
Mmcat\Dibs2\Ngpopd.dib                643 MB
Encyc94\Mm\Avi\T040373a.avi           629 MB
Encyc94\Mm\Avi\T040370a.avi           604 MB
Encyc94\Mm\T048337a.wav               581 MB
Encyc94\Mm\T045929a.mmm               560 MB
Encyc94\Mm\T012919a.wav               540 MB
 
The Encarta CD-ROM contains 643 MB of data. The final file on the CD-ROM is
Mmcat\Dibs2\Ngpopd.dib.
 
Testing Your CD-ROM Drive
-------------------------
 
To ensure the integrity of files that you copy from your CD-ROM drive to
your hard disk drive, compare the files using the MS-DOS File Compare
program (Fc.exe). This test can be used to determine if the CD-ROM
subsystem is functioning properly at the device driver or hardware
level(s).
 
The Fc.exe utility is a useful method for testing problems related to
general protection (GP) faults or other critical errors (such as read
errors or out of memory messages) that can occur with Windows CD-ROM
applications.
 
Attempt to copy one of the following files from the CD-ROM to your hard
disk drive.
 
Files                                 Location On Disk
-----                                 ----------------
Mmcat\Dibs2\Ngpopd.dib                643 MB
Encyc94\Mm\Avi\T040373a.avi           629 MB
Encyc94\Mm\Avi\T040370a.avi           604 MB
Encyc94\Mm\T048337a.wav               581 MB
Encyc94\Mm\T045929a.mmm               560 MB
Encyc94\Mm\T012919a.wav               540 MB
 
For more information about how to perform this task in Windows, see your
Windows printed documentation or online Help.
 
If the following error message appears
 
   CDR101: Not Ready
 
the CD-ROM player cannot read the disk at the specified location.
 
If the file copies, test the file's integrity by using Fc.exe with the /B
(binary) switch. For example, to compare the Ngpopd.dib file On your CD-ROM
with the Ngpopd.dib file on your hard disk drive, type the following at the
MS-DOS command prompt and press ENTER:
 
   fc  /b  d:\mmcat\dibs2\ngpopd.dib  c:\ngpopd.dib
 
If you receive errors, the CD-ROM drive is having problems reading the CD-
ROM at that location.
 
KBCategory: kbsetup kbenv kbmm kbhw kbtshoot kbprb
KBSubcategory:
 
Additional reference words: kbhowto tshoot  1994 multi media multimedia
multi-media
mmtitles kbmm compact disc c-d read-only
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Copyright Microsoft Corporation 1996.