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PC not Recognizing CD ROM

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I am working on a friends PC. Its a bit of a dinosaur.. It is a Pentium 133 with Win95. He bought it used and I am trying to install a 40X CD Rom. (The PC used to be on a LAN at a local ISP and used to have a NIC and a CD Rom before) I installed thedrivers for the new CD Rom from a floppy and went to the control panel to add new hardware, but the PC isn’t seeing the CD Rom. I know this is an easy task, I have done it many times before but.. Am I forgetting to do something?

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PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

Check to make sure the cdrom is recognized in bios.. If so, make sure dos will recognize and check to see if itll work in dos ( get a cdenabler boot disk, dont have one, d/led CDENAB.EXE from support.dell.com/filelib… If that works, try resetting the configuration data in the bios… If nogo there, reinstall the O/S and let it recognize it that way.

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

Have tried this. Thanks

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

some older CDs, and some 3rd party off brands are not plug and play. In this case, ensure you load the CD rom drivers in the Autoexec.bat and config.sys files. Once windows boots, it should show in devices. Once it does, you can remark those lines out in the autoexec and config.sys files.

the disks that came with the CD should allow you to install these lines, if not, use the sysedit command and enter these lines ( or something similar )

in config.sys
device=c:\bin\cdrom.sys /d:mscd001
where cdrom.sys is the file provided by the cd manufacturer

in autoexec.bat

c:\bin\mscdex.exe /d:mscd001

also, ensure that cd rom is set as a slave if it is daisy chained to the original hard drive, if it is on it’s own cable, make sure the secondary IDE controller is enabled in the Bios setup. The older the machine, the more likely it is disabled as a default to save on IRQ conflicts.

also make sure no other device is using irq 15

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

Have tried this. Thanks!

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

Hi from what you have said I guess you have loaded the DOS drivers for the cd, sometimes Windows does not like this as they are 16bit drivers wheras Windows prefers 32bit drivers,try removing all references to the cd rom from config.sys and autoexec.bat and restart hopefully Windows will now see the cd rom.

Best Regards

R.K.Barsby

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

Have tried this before. Thanks!

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

Don’t forget to check the jumper settings! Regardless if it’s on its own IDE cable or on the same cable as the hard drive, it’s best to set the drive as slave (usually the center of the three pairs of pins). Windows rarely finds a CDROM in add newhardware – it sets it up as a CDROM drive at startup…

try to find oakidecd.sys on a WIN98 machine in the windows\command\ebd folder. copy it and mscdex.exe from the windows\command folder onto a blank floppy. sys the floppy from the win98 machine and add the config.sys and autoexec.bat like this:

config.sys
device=a:\oakidecd.sys /d:cdrom

autoexec.bat
a:\mscdex.exe /d:cdrom

boot from that disk and see if the drive works. if it does, you MAY need to add those lines to the config.sys and autoexec.bat of the C: drive, making reference, of course, to the ACTUAL locations of those files…

one more thing to try: search the registry for NoIDE and change the setting from 1 to 0 or 0 to 1, then reboot.

let me know.

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

sorry for the abiguity earlier – i was not at my own desk with my references in front of me. here’s the deal with the noide registry setting:

Check for registry key:
Hkey-Local-Machine\System\CurrentControlSet\Services\VxDXIOS
Look for “NOIDE”. If you find it, things are looking up – delete it.
Go back to system properties, delete your entry/entries for the PCI IDE controller, windows may freeze – either way turn off/exit windows and turn off.

agian, let me know if this works!

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

Thanks!

PC not Recognizing CD ROM

In reply to PC not Recognizing CD ROM

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