Server doesn't detect hard drive but embedded SATA raid software does

I have a server that crashed on Monday night (HP Proliant ML150 G3). Unfortunately the OS mirror i had setup was degraded and trying to boot from the mirrored drive didnt work. I am now currently trying to re-build the server from scratch and restore system state and exchange backups (created using ntbackup utility).

Im trying to install SBS back onto the hard drive that was supposed to be the mirrored hard drive however the server doesnt detect any hard drives are installed. By doesnt detect i mean when you try and run the SBS setup it says no hard drives can be found and also when you enter the BIOS there is no SATA drive detected.

However if you press F8 to enter the embedded SATA RAID configuration you can see the hard drive and also verify it's integrity, which i have done.

What i have tried:
I took the hard drive out and connected to it my laptop with a SATA-to-USB cable and formatted the drive. Still doesnt detect.
I have also deleted the raid array that i setup that was showing as failed anyway becasue there is only 1 hard drive installed.

Do I need to add a second hard drive and re-create an array before the server will see a hard drive? Im really stuck, please help

Note:
I am using a modified SBS install cd which has intergrated SATA drivers created using nlite as i dont have an external floppy drive.

I think i'll create another post to do with the confusion about resoring system state and installing/restoring exchange. the microsoft .doc i read doesnt really tell you much about restoring exchange, only that you cancel the wizard based setup after the base install to restore system state.

Thanks
CaTFiNcHAsked:
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Mark DamenConnect With a Mentor ERP System ManagerCommented:
The BIOS calls out to the RAID Controller to communicate with the HDDs, then the RAID controller will feed back to the BIOS.  BUT, in the Boot Device list you will not see the name of the hard drive, but instead you will see something like

"raid device volume 1" or similar.  Essentially, whatever you call the RAID volume within the Raid controller is what you will see in the BIOS.
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Mark DamenERP System ManagerCommented:
Ensure that the drivers built into the SBS CD are the correct ones.  This is most likely your issue.  SBS would say that it cannot find the drivers if the SATA RAID drivers have not been loaded correctly.
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CaTFiNcHAuthor Commented:
I would have throught the hard drive would have shown up in the BIOS even if the SBS setup couldnt find suitable SATA drivers.

It is the same CD used last year to perform the first SBS install which worked fine.

Thanks for your suggestion.
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CaTFiNcHAuthor Commented:
Thanks for your quick response markusdamenous.

So essientially what your saying is if there is no raid array created then no hard drive will be seen by the bios, even if i can see the hard drive within the raid controller config.

Therefore i need to re-create a new raid array in order to see the hard drives in the bios? i've now formatted the corrupt hard drive and im going to use that to re-create the array.

Thanks again
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Mark DamenConnect With a Mentor ERP System ManagerCommented:
It does differ between raid controllers, but if it is set in RAID mode rather than JBOD mode, you will need an array/volume created before it will post a logical drive to the BIOS,
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CaTFiNcHAuthor Commented:
Im not exactly sure how i did it but i now have two drives running in JBOD mode, so im good to go. SBS is installing.

However when i tried to create a new array with the two disks it just said there was not enough free space to create a new array please delete an exsisting array.... the hard drives were just formatted and there are no other arrays present.

Thanks for your help markusdamenous, full points split over your posts :)
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