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I had one of my SCSI drives in my Compaq SP750 die on me today so I went and bought an IDE drive to tide me over until I got a new computer, the machine is 5 years old now. I install the drive and everything was going well until I plugged it in.

My computer says it detected new hardware and to hit F1 to save changes + reboot. After I do that, the system starts chain rebooting every time after loading my primary SCSI drive, the one that windows is on. I can't get it to boot into windows unless I unplug the IDE drive, and hit F1 to reboot again after it detects that its missing a hard drive. All this time my dead scsi drive still seems to be spinning or at least taking power, but its not being seen by the computer at all even when i move it to different plugs on my SCSI chain.

Does anyone know if theres some special manipulation neccessary to install an IDE hard drive on a compaq workstation? If there is could someone please help? Thanks.


The disc I'm booting up off of, and using right now is the original 9 gb compaq SCSI that came with the machine.

The one that I'm installing is a Western Digital 7200 rpm 120 gb hard drive, I even had the 137 gb hard cap that some old machines had in mind when i got the disc, so I got the 120 gb...


The computer is a 1999 or 2000 compaq sp750 professional workstation, in case that helps anyone solve my problem. Its very frustrating having a non-working drive sit in my bay.

Also, I can't even access bios before the system craps out on me and reboots if the IDE drive is plugged in, so thats not an option, I can access my SCSI controller though.
 

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here's what i would make sure of...

make sure the dead scsi drive is unplugged. (from power, and data cable)

boot the machine.
let it tell you about the missing drive, and let it reboot.

once it boots normally, shut it down normally.

then, boot into the bios, and make sure the ide channel is enabled.

then, shut it down and add the drive.

then upon next power up it should see the new drive, and again want to reboot.

if your compaq does anything other than this, something is wrong with settings somewhere in the bios.

also, make double sure the jumpers on the ide drive are correct, and that the cable is connected to it properly.
 

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Thanks for the reply,

One thing, the system doesn't even notice the dead drive is there, it never loads in the first place, and it doesn't know that its missing the drive. Will try the other steps again but I think I've tried them already over the past 7 hours probably. If it works or otherwise I'll be back, could you possibly think of anything else I could try?

Thanks
 

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if you want to wait 5 minutes and see what google hits me with...

brb

from what i'm seeing this is no problem.

the settings in the bios might conflict you, but if you hit a solid wall and no bios settings will help, then you probably have a hardware issue.


You must go to the bottom and set the system device priority first so that your bootable SCSI HDD is at the top of the the list at the very bottom of the page, and then system bios devices comes below that. Then specify the C drive followed by floppy in the list at the top of the page.
I would also say, more deliberately: there is no problem with running IDE and SCSI together (in general, excepting interrupt conflicts, as noted above, which should never happen in a "normal" system).
You can use both scsi and IDE.
Windows will see both normally.

The drive that boots will be c: drive
Ensure that that the bios is configured to boot from scsi first.
 

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Ok i've just tested my system for a while, and I'll post the results I'm getting.

Basically I just ran tests to see what happens when I plug in and when I don't plug in the drive.

Heres what happens on boot:

It says i'm running Bios v. 2.13 (There is a higher version available I think), the HP site is confusing but theres like v2.13, 3.01A and 3.05 available, I might try flashing my Bios tommorrow.

I geth 768 MB for ram check
Inicialized Processor 0

Adaptec AIC-7899 SCSI BIOS v.2.55
etc.

CH A ... SCSI Device 0 Compaqpc MAJ3091MP

Then comes the tests.

the first time I plug in the drive I get

The following configuration options were automatically updated.
Disk 1 54498 MBytes
If you are running UNIX (WinXP Pro here) you need to configure your system using COMPAQ User Diagnostic Diskette.

F1 to save changes

I hit F1, the system reboots, gets to:

CH A ... SCSI Device 0 Compaqpc MAJ3091MP

then it automatically reboots, before I can even enter setup for bios or anything.

If I then unplug the drive and reboot I get:

1782-Disk Controller Failure:

The Drive is not installed correctly or has failed. Make sure that any jumpers are set correctly, and that power and drive cables are connected, both to the drive and the system board. Also verify that the cables are the correct cables for your computer.

The following configuration options were automatically updated: our PC
No fixed disk present
F1 to save changes,

Then it will boot up normally to windows from my SCSI disk if I leave the IDE unplugged, otherwise the cycle restarts.

Anything I can do? Maybe I should install compaq bios on the IDE drive and try that? I can't even install windows on the new drive to try that right now even if I had the disks, so thats not an option...
 
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