CD drive disappearing in DOS after re-installation of Win95

A student of mine recently did a clean-up on his files and did such a good job that he had to re-install Win95!!
After he did so, he found that when he tried to play games in DOS from his CD-ROM, he got the message "invalid drive specification" when he typed in the CD-ROM drive letter ie. d. The floppy drive is  working fine. He seems to have tried all the trouble-shooting ideas given in Win95.
I would really appreciate your expertise on this
Anne060197Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

slpCommented:
Sounds like he also deleted or moved his real mode CD-ROM drivers as part of the "clean-up".  This can be a bit of a bear to fix if he's also deleted or "cleaned-up" his DOS configuration files (CONFIG.SYS and AUTOEXEC.BAT).  If he has copies of these available from before the clean-up, please post them and I should be able to help.

SLP
0
eizensCommented:
I think, he have to reinstall CD-ROM dos drivers booting in dos mode. It seems, that directory containing CD-ROM driver is cleaned up, and device driver (atapi.sys or other) and mscdex.exe entries in config.sys and autoexec.bat are deleted.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
smeebudCommented:
Do you know if he has also installed any Bus mastering drivers.
"bmide" will not allow the loading of the CD devices for windows and dos.
0
Build an E-Commerce Site with Angular 5

Learn how to build an E-Commerce site with Angular 5, a JavaScript framework used by developers to build web, desktop, and mobile applications.

compmechCommented:
If your student's system is booting up straight into W95 and then he chooses to restart in Dos mode the file "dosstart.bat" is executed. This is where you can place the device driver for the cd-rom along with the mouse driver. If there is currently an autoexec.bat on the system it will probably have the settings for the sound card in it, that should be enough. W95 prefers to handle the initial setup of the system and invariably the more you put into config.sys and autoexec.bat the less happy W95. The following line is the standard system for cdroms supplied with W95 check your dosstart.bat in the W95 directory and place this line in it, this will enable, the cd-rom once you restart in dos.
LH /L:1,46880 C:\WIN95\COMMAND\MSCDEX.EXE /S /D:MSCD000 /M:15 /V
Ofcourse the previous answer regarding loading the proprietory Cdrom driver I agree would perform better than the generic above, but the ultimate location for this driver is my point.
0
bernardyeanCommented:
 I think you need to check if then WIN95's conifg.sys and autoexec.bat has such line copy from DOS config file.
I have met such problem before. I can delete the line
"DEVICE ....SYS" in config.sys and "... C:\DOS\MSCD000 ..." in AUTOEXEC.BAT.
  Then you can reboot your windows95 to let WIN95 to search the CDROM automatic and use its own driver.

0
smeebudCommented:
Don't forget to have C:\WINDOWS\COMMAND in the path statement or windows won't pick up MSCDEX.EXE if you don't have a line as compmech pointed out.
compmech, you are right about the
LH /L:1,46880 C:\WIN95\COMMAND\MSCDEX.EXE /S /D:MSCD000 /M:15 /V
except I'm not sure he should add the LH address /L:1,46880 as that varies from system to system.
This is a REPETE: Please your Device Manager under "Hard Disk Controllers"
Do you know if he has also installed any Bus mastering drivers.
"bmide" will not allow the loading of the CD devices for windows and dos.

0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows OS

From novice to tech pro — start learning today.