Non-SCSI drives showing up as SCSI?

jimmitz · #1 09-26-2002, 08:26 AM

I have a CDRom drive that I KNOW isn't SCSI showing up as "SCSI CdRom Device" in the device manager and the same thing with a hardrive that I know isn't SCSI. When I installed the devices they installed right as regular CDROM and harddrive, until about 2 days ago I started noticing slowdowns from both of the devices. I finally decided to check up on them today and noticed this. How do I fix this?

NBR · #2 09-26-2002, 08:56 AM

are ur hard drives running in PIO MODE? if they are they will be alot slower, they should be running in UDMA mode.

jimmitz · #3 09-26-2002, 10:13 PM

Not as far as I can tell... however when I go to check it in the Device manager, I don't have an "advanced" tab anymore.

jimmitz · #4 09-29-2002, 02:22 AM

Bump for help

Disk_Contented · #5 09-29-2002, 10:34 AM

Is there an entry in device manager for IDE ATA/ATAPI Controllers?
If not, scan for hardware changes. If none are found and the entry is there, has it got a question mark?.
In any case open the entry and uninstall the subitems. Restart the PC and this will allow windows to redetect the controller and drives. Hopefully sorting your problem.

W8 4 Me · #6 10-01-2002, 10:13 AM

hmmm, when I saw this thread I looked in my device manager and I notice that every drive on my NON-scsi system is defined as a "scsi" drive. This has me concerened..being only "somewhat" tech minded.
My system is a Soyo sy-645dx Dragon Ultra, with a P4 and SiS chipset. I installed the latest SiS chipset drivers a month or two ago. The system has one DMA 133 Maxtor 40 gig drive and 2 cdroms (DVD & CD-RW). I am sure I have the dma 133 cables installed and to the proper busses on the MB.
is a DMA133 drive supposed to show up as scsi? where can I find what mode it is in (besides the bios boot screen)? When I look in the device manager there is no mention of PIO type modes, only a scsi id (0)

Disk_Contented · #7 10-01-2002, 11:29 AM

My IDE Hard Drive shows up as being UDMA mode 5, my ide cd-rom/dvd as mode 2
I have a SCSI cd-rom that is shown as such.
All IDE devices should be in the IDE/ATAPI controllers section, that is where DMA/PIO mode settings are made.
It may be usefull for you W8 to try the same thing as i suggested in my previous post.
In the meantime, i'll scan Microsofts site for any info.
A Poll on this subject sounds like a very good idea.

W8 4 Me · #8 10-02-2002, 02:45 AM

Well something must be screwed up on my system. The only thing I have under the IDE ATA/ATAPI controllers section in device manager are the primary, secondary and SiS Bus Master IDE controllers.
My Maxtor is listed under the 'Disk drives' section..with no mode information anywhere ... only scsi info, and the CDroms are under the 'DVD/CDROM drives', again with no mode information...
I think I'll call my motherboard manufacturer today about this also but I will watch for anything you post Disk Co. And thanks a ton for helping!

Disk_Contented · #9 10-02-2002, 06:47 AM

They're in the right place, but i had a thought, is dma enabled in the bios?
I would make sure it is set to auto. In fact, set all the HD options to auto, and see what happens.

W8 4 Me · #10 10-02-2002, 09:22 PM

hi Disk Co,
well now I have a real problem. I deleted all the ide controllers, which also deleted the cdroms, tried and tried to delete the Maxtor HD which still shows as a scsi device, but now XP does not show any cdroms or any ide controllers in Device Manager...nor does the system find any new hardware. When I do a manual device install, cdroms are not listed however I do see 2 "?" in the choices of items to install one of which is "Primary DMA Channel", the other, SiS Bus Master IDE controller, but when I click on them to install them, I get a window saying the devices are working properly! doh! Also, neither of those 2 questions marks are not showing in the CP device manager....
I tried to download the SiS 4in1 drivers and run setup but it gives an error saying I need to install other ide drivers first.. it must be a patch file. My problem is, I cannot re-install the drivers that came with my Mother Board either because they are on a cd.. and windows can't see any cdroms.
I checked the Bios and it shows both cdroms and the HD installed. All ide controllers are set to auto and when I boot I see the drives listed. Also with the xp cd in my drive, it asks if I want to boot from the cdrom, which is normal. So the system sees the cdroms and HD, but windows doesn't.
Again, when I do a scan for hardware it doesn't find anything.
Now I'm stuck, it's way late and I need to go to bed 2:30 am. I never did call Soyo today and if the forum can't help I may have to tomorrow...I fear the dreaded format and reinstall routine looms on the horizon! (gawd I hate that.. it's getting so old!)

W8 4 Me · #11 10-02-2002, 10:06 PM

BTW, I found an SiS ide utility on my system and ran it.. it shows my maxtor as supporting UDMA 6 and PIO mode 4. It sez Current device use : UDMA 6...but windows doesn't see it that way

Disk_Contented · #12 10-03-2002, 01:48 AM

Phew! something has gone badly wrong here, and it looks like the inevitable is your only choice.... But, if your not so fed up that you just want to have done with it and go the full hog, or you have files you want to keep, System Restore should be able to put you back a few days to a point where your drives still worked.
Then, the following are worth a try:

In the run dialog, type "sfc.exe /scannow" (system File checker)
failing that, do a repair install by booting from the CD.
Bear in mind that neither of these may effect a cure

These will be time consuming, and if you tell me to F off, i dont mind.
I'm just sorry that things looked so bad after you took my advice, as i know how frustrated you can get When trying something sinks you in deeper.
Sorry mate

W8 4 Me · #13 10-03-2002, 11:48 AM

well Disk Co, no hard feelings here bro

I'm always trying to tweek my rig and am very well introduced to the reformat thingie ..I usually do it at least twice a year anyway and with all the drivers in and out of my system, it was time.
System has been formatted and OS reinstalled...now the tedious process of getting it back into show trim

Interestingly enough, when I first install XP it shows no scsi reference to anything, it's only after installing the ATA 133 SiS IDE drivers that everything turns to scsi reference. I called Soyo and they said that is correct, once the UDMA 133 drivers are installed it will show that way...tho I think thats just an excuse. They don't have any updated drivers on their site for my chipset (645 dx), offering only the ones that came on the mb install cd. I need to search SiS for more but I have the 1.1.11 ide drivers in now which are the next step above the ones they give. Not very well pleased with Soyo stuff or the support.. but it just may be me.
BTW, I tried a repair install and when it went into the partitioning portion of the install, I noticed an 8mb unpartitioned area on the drive. I remember seeing someone post that that is very probably due to a trojan on the system?? this true in every case? In any event I went to Maxtor's site and downloaded their MaxBlast II util and formated the drive and recreated the partitions before new OS install. It didn't say it was a low level format but I didn't see that 8mb issue on the final xp install..

Disk_Contented · #14 10-03-2002, 03:23 PM

Ahh well... I suppose the inevitable had to happen. I'm well versed in the art also.

This 8 meg partition issue is quite worrying, when i last used partition magic, i found i had 2 partitions of 8 meg each. I blamed part magic, but perhaps it was something sinister. In that case also, i had to delete all partitions and start from scratch as the HD would no longer boot.

Well, as your now back up and running, you may as well stick with the drivers your using as they seem to work.
One last word, when your system is back how you want it, do a ghost backup or similar, it has saved my bacon on a few occasions.

Glad to have helped (or not, depending on your point of view)

C U Bud