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CDROM won't mount in win2k.....

gdman

Junior Member
Just got my system set up, win2k installed, I'm ready for some driver installation! But wait--you can't install many drivers without a CD-ROM drive... I have two CDROMs, a LiteOn 52x and a Plextor 24/10/40, each set to master on IDE channels 1 and 2 respectively. The BIOS recognizes them just fine, (most of the information which appears when the drive is auto-detected by the BIOS is missing, but it all seems HDD specifc--head, cylinder, etc.) but Windows 2000 shows nothing but A: and C: . Do I need to install any drivers for the CDROM drives? It seems in the past that windows has just automatically recognized them, but then again I've never used these specific drives. As usual, thanks in advance 🙂
 
let me guess...you have some kind of adaptec software installed, right? Like EZ CD, maybe? Even if you don't, sounds like your fix might be in the following registry key:

Remove the Upperfilters and Lowerfilters values completely from the following registry key:


HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}

In other words, when you go to that key, on the right hand side you'll see a bunch of entries. You may see "Upperfilters" and "Lowerfilters", or you might just have one of them. Doubleclick on the upperfilters and/or lowerfilters keys and remove whatever value is in them... You can keep the Upperfilters and/or Lowerfilters keys...just delete the values contained inside them. Remember, if you have both keys, remove both values. If you have one of the two keys, remove the value in it.

Close regedit, reboot, and your cdrom(s) should be back.
 
Good idea, but I don't have any software installed and those keys dont exist. I was looking in the Windows 2000 help file, and it said that there are special steps necessary if you use more than two IDE devices. I found an article on MS Knowledge Base that I'm going to try, I'll see if it works.
 
I can't speak for other chipsets (like Via), but for Intel chipsets, Win2K and XP have an option in Device Manager that will completely pass over detection of your IDE controller channels if it's set incorrectly.

Open up Device Manager. Go to your IDE Controller entry(ies). Go to the Advanced Settings tab. Check both the Primary and Secondary channel's settings. They will have settings for Automatic (meaning "Detect") but can also be set for "None", which means Win2K will not even try to detect what's on those controllers. Make sure they're set for Automatic. I would also set the bottom setting (Transfer Mode) to "DMA if Available".
 
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