CD-ROM drive running in MS-DOS mode

Updated: 05/19/2017 by Computer Hope

Note: The following solution applies only to Microsoft Windows 95 and Windows 98 users.

Tip: If you want to switch to the CD-ROM drive while in MS-DOS or the Windows command line see our how to change drives in MS-DOS and Windows command line page.

First, check the performance of the system. To do this, click Start, Settings, Control Panel, and then double-click system. Click the performance tab, and then inspect the third line down (File System); if this says 32-bit, move to the reinstalling CD-ROM drivers section. If this line contains a message about your computer being infected with a virus, following the upcoming steps will resolve your issue.

Warning: The following steps may erase the information on the hard drive. We recommend that you backup your information before attempting any of the below recommendations.

From the MS-DOS prompt, which you can get to by either booting from a diskette or selecting Start, Shutdown, and selecting restart the computer in MS-DOS mode, type the following command.

fdisk /mbr

The above command recreate the master boot record (effectively removing the current master boot record).

Once recreated, reboot the computer and your issue should be resolved; if not, continue to the reinstalling CD-ROM drivers section.

Reinstalling CD-ROM drivers

CD-ROM installIf your File system was 32-bit or your CD-ROM is still experiencing issues after following the previous steps, it is likely you are experiencing CD-ROM driver issues. To resolve this issue, access the Windows Device Manager.

Once in Device Manager click the + next to the CD-ROM drive (if not already a - ). From this menu, highlight the CD-ROM listed and click remove. Once the CD-ROM has been removed, reboot the computer. As the computer is rebooting, your CD-ROM should be redetected and reinstalled automatically.

Additional information

  • See our CD-ROM definition for further information and related links on this term.