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SCCI CD ROM Can't found on my windows 2000 OS

Posted on 2003-03-06
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Last Modified: 2010-04-13
Hi all,

i got a SCSI Card Adaptec AHA-2940U/AHA-2940UW PCI SCSI Controller and a SCSI CD-rom, everytime i start my windows 2000 server. it will no detect by my system, but after me restart the windows, it will detect and can be use.

so how to solve this problem and make my windows 2000 can detect my cd-rom at 1st time start the windows.


THank
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Question by:kwq5421
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7 Comments
 
LVL 51

Expert Comment

by:Netman66
ID: 8080611
Sounds like a termination problem.  Also, make sure you are using the correct 68-pin to 50-pin adapter for the CD ROM - there are many different ones - some with termination built in.

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Expert Comment

by:hpman820129
ID: 8085597
Try to Enable "Start Command" for the CD-ROM from the SCSI card BIOS. Some SCSI cards have delay option, you could set more delay time.

hpman820129
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Author Comment

by:kwq5421
ID: 8097027
hi

how to enable the start command from the SCSI Bios ? and my SCSI Card only 50 pin only

Thank.
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LVL 51

Expert Comment

by:Netman66
ID: 8097809
According to your model number of the card it should be 68-pin - but never-the-less, during the boot use CTRL+A or CTRL+S to enter into the SCSI card's BIOS.  From there you can set the start command up for each ID number on the chain.

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LVL 1

Author Comment

by:kwq5421
ID: 8107440
hi, i have set the start command to yes, but it didn't got any field to let me set the delay time, so still got any suggestion from that situation ?

and also what mean of termination ?

Thank
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Accepted Solution

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Netman66 earned 200 total points
ID: 8107603
Depending on your configuration, you must have a terminator on the very end of the SCSI ribbon cable if none of your devices are able to terminate themselves.

If there is no terminator on the very last connector on the ribbon, then the last device present on the cable must have termination enabled and perhaps even term-power depending on the hardware.  Termination must take place at the end of the ribbon or at the last device connected to the ribbon and ONLY there.  No other devices should have termination enabled in between the adapter and the last device.

SCSI requires both ends of a chain to be terminated.  Most newer adapters automatically terminate their end if there is no external devices present - but you are still responsible for terminating the other end - either with an active or passive terminator block (which plugs into the last device plug) or using the last device itself by enabling termination on that device.

Here is a "primer" on SCSI:

http://www.mycableshop.com/techarticles/scsiprimer.htm

Here is termination - according to Adaptec:

http://www.adaptec.com/worldwide/support/supporteditorial.html?sess=no&language=English+US&prodkey=SCSI_termination

Here is the guide to seting up your controller using SCSIselect (at boot time):

http://www.adaptec.com/worldwide/support/supporteditorial.html?sess=no&language=English+US&prodkey=SCSI_user_guide

This should get you up to speed on what you should be looking at.  Once you have a better understanding of the SCSI subsystem you should be able to find your problem easily.

Hope this helps now.

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Author Comment

by:kwq5421
ID: 8133041
Thank for all of you helping.
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