Microsoft KB Archive/133216

Encarta ’94: Testing CD-ROM Drive for File Access

PSS ID Number: Q133216 Article last modified on 03-22-1996

1994

WINDOWS

= 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 642-643 MB Mmcat 640-642 MB Encyc94-639 MB

To test for specific drive-capacity limitations, try to access the following files:

Files Location On Disk —– —————-

Mmcat.dib 643 MB Encyc94040373a.avi 629 MB Encyc94040370a.avi 604 MB Encyc94048337a.wav 581 MB Encyc94045929a.mmm 560 MB Encyc94012919a.wav 540 MB

The Encarta CD-ROM contains 643 MB of data. The final file on the CD-ROM is Mmcat.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.

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:.dib c:.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 ============================================================================= Copyright Microsoft Corporation 1996.