Microsoft KB Archive/132539

Bookshelf 1994: Testing CD-ROM Drive For File Access

PSS ID Number: Q132539 Article last modified on 03-07-1996

1994

WINDOWS

= SUMMARY =

Because of physical read limitations of some CD-ROM drives, you may not be able to access some files and directories on the Bookshelf 1994 CD-ROM. This article lists some of those files and directories and explains how to test your CD-ROM drive.

= MORE INFORMATION =

The CD-ROM drive may have difficulty reading the final two folders, listed below, from the CD-ROM.

FOLDERS LOCATION ON DISK ——- —————-

Mmcat 475-477 MB Mmcat 474-475 MB

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

FILES LOCATION ON DISK —– —————-

Mmcat.dib 477 MB Mmcat.dib 475 MB

The Bookshelf 1994 CD-ROM contains 477 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 have been copied 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 programs.

Attempt to copy one of the following files to the hard disk drive.

FILES LOCATION ON DISK —– —————-

Mmcat.dib 477 MB Mmcat.dib 475 MB

For more information about how to accomplish this task in Windows, see your Windows printed documentation or online help.

If the follow error message appears:

CDR101: Not Ready

the CD-ROM player cannot read the disk at the specified location.

If the file copies, test its integrity by using FC.EXE with the /B (binary) switch. For example, to compare the Ngpopd.dib file on your CD with the Ngpopd.dib file on your hard drive, type the following at the MS-DOS command prompt and press ENTER:

fc /b d:.dib c:.dib

where your CD-ROM drive is drive D and your hard disk drive is drive C.

If you receive errors, the CD-ROM drive is having problems reading the CD at that location.

KBCategory: kbsetup kbenv kbmm kbhw kbtshoot kbprb KBSubcategory:

Additional reference words: kbhowto tshoot 1994 1.00 multi media multimedia multi-media mmtitles kbmm ============================================================================= Copyright Microsoft Corporation 1996.