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System won't boot with two devices attached to IDE1 controller on motherboard.

Hi Experts,

  I have an IBM NetVista workstation that all of a sudden doesn't support two devices on each of the controllers. I had 1hdd and 1cdrom connected to ide1 on the motherboard and i had 2hdds connected to ide2. Well this system was rebooted and now it only comes up if only one device is connected to one controller, if I connect two devices per controller than nothing gets detected. I've never seen this, anyone?
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frankbustos
Asked:
frankbustos
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2 Solutions
 
jordibartrinaCommented:
Hello,

Have you tried with 2 devices in IDE0 and IDE1 empty?
Could be a overload for your power supply?
Are the jumpers on each device well connected?

HTH
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frankbustosAuthor Commented:
Yes, I have tried 2 devices on IDE0 and none on IDE1 and that doesn't do anything, no devices are detected. One device per IDE controller works. yes, jumpers are set correctly, Power Supply appears to be ok.
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jordibartrinaCommented:
Hello again,

Curious problem !

Model of netvista?
Model or size of HDs?

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frankbustosAuthor Commented:
Yes, very curious and strange as to why it happened all of a sudden. The hard drives are 80GB Maxtor which were working great with two of them on one motherboard and now work fine if I put one of them per controller. The  model of the netvista is 8315.
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jordibartrinaCommented:
IBM hardware manual explain: The IDE cables with three connectors should be compatible ATA-100.
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frankbustosAuthor Commented:
right and like i said it was working before and all of a sudden it stoped.
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_Commented:
Could be:

bad cables  (but both at once??) - try different cables or test these on another system.

corrupt OS ide drivers - try to re-install them

ide controller is flaky - can you try an addon ide controller?
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nobusCommented:
did you try with 2 other devices?  one can have a fluke, and lock the other
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frankbustosAuthor Commented:
yes, this is a very strange problem. I got new cables, even new hard drives and same problem. I removed the IDE controllers in device manager and had system detect them again...same thing.
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_Commented:
Hmmmm... what happens if you go into the bios and try to Detect the devices manually, instead of having everything set to Auto-detect?
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frankbustosAuthor Commented:
same results, i've tried doing that. You think its the motherboard?
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_Commented:
That's about all that left.
Except trying an addon IDE PCI card to use for the other drives.
Trying to boot from the addon card, or replacing the mobo (unless it is the same model) will most likely result in a fight with Windows of some kind or another.
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_Commented:
I don't think it will do any good, but you can try:

... to clear the CMOS, with the jumper for 5-10 seconds or removing the battery for about 20-30 minutes. Be sure to unplugged the system from the wall first.

... reflash the bios with the latest update.
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nobusCommented:
it seems like a malfunctioning ide controller - the ide PCI card can help
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_Commented:
Thank you much.   : )
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