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CDROM is not accessible

By rdavis44 ·
I have an IDE CDROM that does not show up in MY COMPUTER. During Startup, the screen shows that the CDROM was found.
Devices show that the Atapi and CDrom devices are set for Automatic Start and in-fact did start. Disk Administrator shows the CDROM but no drive letter. After assigning a drive letter, it shows up in MY COMPUTER but when you click on it, you get an error "H is not accessible, the parameter is not correct". If I reboot, I am back to the same scenario.
As additional info, all my Hard Drives are SCSI. The CDROM is on Controller 1 and Controller 2 is disabled. The Event Viewer does not show a problem. I have tried two different CDROMs with the same results.
Can anyone help me -- I am pulling out what little hair I have.

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CDROM is not accessible

by rdavis44 In reply to CDROM is not accessible

Thank you again for trying. The SCSI Bios is enabled. The Atapi IDE driver is loaded for the CDROM. The CDROM is installed on Controller #2. It was on Controller #1 and I moved it to Controller 2 but the problem remained the same. My Server is Multihomed.I only mention this to discuss the IRQs. There doesn't appear to be any IRQ conflicts. One NIC is on IRQ5, the other is on 11. The SCSI Controller is on IRQ 10 and the IDE Controller is on 15. Please see the next response for other information. Ron

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CDROM is not accessible

by spratlin In reply to CDROM is not accessible

Try checking the value of the drive in the registry. It should be set at 0 rather than 1 in order to access it.
We kept getting the "no access to drive" error on one of our servers and once we changed the value to 0 it worked fine.

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CDROM is not accessible

by rdavis44 In reply to CDROM is not accessible

Thank you for trying. Although the information didn't solve my problem, I feel that you and Baziite are right around the solution but somehow I am missing it.
Using Regedit,I checked the Registry for Local_Machine/Hardware/Device Map/Scsi. The CDROM is on Scsi Port 0.
Device name, Driver, DMA and Mfg is the same on another Server that has an IDE CDROM. The difference is the IRQ number and the IO address. The problem with comparing this cofiguration with other Servers is that I don't have any two configured the same. Only one other Server has an IDE CDROm but it also has IDE Drives. All the others have SCSI CDROMs and SCSI Drives.
I hate t give up on this without solving the proble, but I will put in a SCSI CDROM to see if it works.
Thanks again.
Ron

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CDROM is not accessible

by pcohen In reply to CDROM is not accessible

You are certainly on the right track. You have to make sure that the atapi driver is loaded, but you also have to make sure that the drive letter that the CD-ROM is using is not already taken. Make sure that you change the drive letter of the CD-ROM. You can check in the Event Viewer if the atapi service is loading correctly. If that is not the problem then try changing the drive letter.

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CDROM is not accessible

by rdavis44 In reply to CDROM is not accessible

Thaks-a-bunch for trying but the information you provided did not resolve my problem.
Using Devices, I determined that both the Atapi driver and CDROM started automatically. Viewing the SCSI applet in Control panel, I again determined that the Atapi driver is the driver for the CDROM. I have already replaced it with a driver from a working Server.
When I bring up the Server, the CDRom is not shown is MY COMPUTER. It doesn't have a drive letter in Disk Administrator. After assigning it a letter, it shows up in MY COMPUTER, but is still not accessible. When I reboot the computer the Drive letter goes away and of course it is no longer in MY COMPUTER. I bring the Server up without Networking to ensure there is no Drive Mapping that would over write the CDROM drive letter. I reassigned my "E" Hard Drive to a different letter (i.e. H) so I could use the letter E for the CDROM and it still didn't work. By that I mean the drive is not accessible after I assign it a the letter E (or F) and it goes away when I reboot.
Thanks again.
Ron

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CDROM is not accessible

by Baziite In reply to CDROM is not accessible

Yes its me again . I just wanted to know if you are doing "commit changes now" in the disk administrator before exiting it . May be this is the reason why the assigned drive letter disappears when you reboot . Try this and let me know .

Good luck !

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CDROM is not accessible

by rdavis44 In reply to CDROM is not accessible

Thanks for you interest and hanging with me on this problem. I rated your proposed solution as I did only because I still have the problem and not because you may not turn out tbe right. If so, I will see that you get the points. I said all that because -- the commit cahnges now -- is greyed out and not available to me. Logically it seems it ould be available. However, I changed the drive letter assignment for a couple hard drives and the Commit, etc was still not available but the drives still work -- even after I reboot the drives keep their new letter assignment. I tried another Server and the Commit, etc was also greyed out. However, I just realized I only checked 2 out of 5. will check others tomorrow and will let you know.It seems you may be on to something. For what its worth, I only have SP3 installed.
Ron

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CDROM is not accessible

by Baziite In reply to CDROM is not accessible

Yes its me again . I just wanted to know if you are doing "commit changes now" in the disk administrator before exiting it . May be this is the reason why the assigned drive letter disappears when you reboot . Try this and let me know . Also make sure you have a CD in the CDROM when you click the icon in MY computer .

Good luck !

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CDROM is not accessible

by rdavis44 In reply to CDROM is not accessible

This looks like a duplicate. See above response I do have a CD in the CDROM.

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CDROM is not accessible

by spratlin In reply to CDROM is not accessible

I received your message the other day...I could care less about the points, I'm just glad that my undescriptive "newby" answer led you in the right direction. I've only been doing network administration for about nine months, temporarily, and I know exactly how frustrating it can be when you can't get the darn drive to work. We fought and fought with the cdrom on one of our servers. Same problem you had. Like I said before, I'm new to this administrator stuff, and am not fluent in the language, so all I could think to tell you was check the value in the registry. I guess it was my mistake for assuming you knew where to look...I'm too used to being around all these computer geniuses in my shop, who can translate what I say into computerlingo.
Again, I'm glad I could at least lead you in the right direction.

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