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Alienware Resurrection (Area51m 7700 hard drive controller workaround)

post #1 of 5
Thread Starter 
Greetings;

I am the owner of a used Alienware Area51m 7700. The machine came without a drive caddy, power supply, or drive bay cover. I was able to get a replacement caddy and the proper power supply without too much trouble. I have yet to try to find a replacement drive bay cover.

Anyway, I have been unable to get the system to recognize any of the hard disks I attached to the controller cable (PATA). I also see no BIOS or POST level indicators that the drive controller is even present. One source I stumbled upon indicated that the controller chip may NOT be faulty, but simply might need a firmware flash; however, I can not find that source again and I have not had any luck finding a firmware flash for that model of controller. (If anyone knows about this, please point me in the correct direction!)


For some time, I simply ran the machine with SUSE via bootable USB memory stick, but recently I came across a site (http://newmodeus.com ) that was selling optical bay hard drive adapters. I took a chance and bought one and it works wonderfully! Specifically I bought the OBHD-PATA-B unit ( http://newmodeus.com/shop/index.php?main_page=product_info&cPath=2_27&products_id=186 ). I did have to transfer a bracket from my CD drive to the OBHD tray, but this was only 2 screws and a breeze.

I now have a hard-drive based load of XP Pro running beautifully on the system. I am sure the performance is nothing compared to what one could get from some of the configuration of the proper controller, but it has given new life this this old, but still viable machine.

To anyone facing the hard drive controller problem who is willing to give up an optical bay for a hard drive, I _highly_ recommend this option. I caught it on sale and it only cost me $25.00 USD plus shipping.

I hope this information is useful for others! Good luck.

Nox
post #2 of 5
Nice find! This should help many people get their 7700 back on its feet. This is a much better alternative than a $400 motherboard replacement. Just out of curiosity, can you run a hdtune benchmark to get an idea of the performance this method provides? Also post the model number of the hdd you currently have connected.

Nice Job!
post #3 of 5
Nice Find!
post #4 of 5
Thread Starter 

hdtach results for OBHD in Area-51m 7700

Quote:
Originally Posted by Tokamak7700 View Post
...Just out of curiosity, can you run a hdtune benchmark to get an idea of the performance this method provides? Also post the model number of the hdd you currently have connected...
Sorry about the delay.


The hard drive I am currently using is an old HITACHI_DK23DA-30


Here are the hdtach results:

Quick Test Resaults
Random Access: 20.6ms
CPU Usage: 1%
Average Read: 19.6 MB/s
Burst Speed: 31.3 MB/s


Long Test Resaults
Random Access: 20.4ms
CPU Usage: 2%
Average Read: 19.6 MB/s
Burst Speed: 31.3 MB/s

post #5 of 5
Ok, thanks. Your results are right in line with that HDD model. The HDD rotates at 4,200rpm and transfers at an average of 19 MB/s with ~20ms access delay. This drive appears to handle a bust up to 57 MB/s, but your results report max burst of 31 MB/s.

Your 31 MB/s burst rate may resemble the max supported data rate for this interface, which isn't bad considering its using the old IDE interface for cd drives. In your case, the Hitachi HDD appears to be limiting your speed (in both transfer rate and access delay).

I'm curious to know the impact of accessing your HDD and CD drive simultaneously. Have you noticed any problems doing this?

HDD Benchmark List (from HDTune)

Results for the Hitachi DK23DA-30.
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