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onboard Promise Raid Controller cant see all the space on a drive

Posted on 2004-10-12
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Last Modified: 2010-04-26
Hey all, Im wondering if any of you can help me, i have the below:

AMD 2500+
ECS L7VTA Pcb1.1 bios version 1.7j
512Mb ddr333
1xMaxtor 30 Gb on Primary channel
2x Seagate 20Gb drives on Promise Raid controller (onboard) in Ch0>>Master Ch1>>master arrangement

I boot and enable the raid controller in the bios, create a stripe array, and you would assume it would be 40Gb, but it only seems to take 2Gb from each drive, thus landing me with a 4Gb stripe set, pointless seeming as they are 20 Gb drives,  any help will be much appreciated.

regards
Supercomptueruk
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Question by:Supercomputeruk
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by:Callandor
ID: 12289495
Check the jumpers on the drives, to see if they are set to be limited in capacity.  Try each drive separately, to see if they can be detected as 20GB drives by the controller in a non-RAID configuration.
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by:Supercomputeruk
ID: 12289536
they are detected as 4Gb drives in each case, sorry i should have said in the main comment.
Thanks for the quick reply tho.
Supercomputeruk
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by:Callandor
ID: 12290262
If you can try them in another machine, what they are detected as will tell you whether the problem is with the drives or the RAID controller.
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by:Supercomputeruk
ID: 12290458
they work fine in the master channel 1 on the actual ide controller, and only the raid controller, im wondering if a recent bios update caused this, but i didnt use the controller before the update, i will reflash back to version 1.7i and even 1.7h if it helps, just not right now lol. im in the middle of my ICT coursework lol, ill give it a shot and let you know.
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by:Supercomputeruk
ID: 12311532
Right, ive tried reflashing back to 1.7b and every step upwards, no luck, so I tried one of the 20Gb drives and it sees it as 20Gb and then I try the next one, (removing the 1st one 1st) which it sees as 4Gb, on the same cable everything, then I try it as the slave on IDE channel 0 it sees all 20Gb in windows, which leaves me very very confused. lol
in addition to this, XPh just causes errors in win32k.sys when I have the raid enabled in the bios for some reason lol, but thats another question for more points later once i solve the low level problems.

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Callandor earned 500 total points
ID: 12327310
Well, you've confirmed that the drives can be detected as 20GB in some configuration, so I think your RAID controller is faulty.  You may be able to keep the motherboard, if you want it, by purchasing an a PCI IDE RAID card: http://www.newegg.com/app/ViewProductDesc.asp?description=15-104-214&depa=0
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by:Supercomputeruk
ID: 12331637
Thanks for the input, it helped to some extent, what ive done is ive set up a 40Gb stripe using my 30Gb and the working 20Gb, and left the drive that is detected as 4Gb on the IDE1 as master for a backup drive, thus bypassing the problem and gaining 10gb extra space. However I will look into purchasing another raid card when I have the required funds lol.
Many thanks
Supercomputeruk
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