P55GD80 slowdown when copying from DVD SATA drive.

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eman1777

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I had an issue with my system becoming unresponsive after copying files from a DVD drive to my secondary data drive. I have the specs below:

P55GD80 (Bios 1.5)
Core i7-860
Intel X-25M 80GB SSD (Boot Drive)
Seagate 7200.10 320GB (Data Drive)
DVD-ROM
DVD-RW
4 GB Gskill memory
Windows 7 Ultimate 64bit.

My initial setup had all of the drives on the Intel SATA 1-6 connections. I first noticed an issue when copying files from either of the DVD drives to my secondary data drive. My whole system would slow to a crawl. After many different combinations, I found the best performance by moving my secondary data drive to the SATA 7/8 Jmicron controller. It does not make sense why I needed to do this. Any ideas? I did not notice an issue when copying from the SSD to the data drive, but then again, I rarely do that.

Do I need to enable AHCI for the Intel controller? If so, how do I do that. When I went into the BIOS there only seemed to be an option for this for the Jmicron controller. When I enabled this, the system suddenly did not see any other drive besides the one connected to the Sata 7/8.

Also, why when I hook up the two DVD drives to SATA 7/8 (JMicron) will the BIOS see both drives, but Windows 7 sees only 1? Does JMicron only operate in RAID?
 
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With Win7
- go to Registry
change
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\Msahci
"start" to  0  <----
Then set AHCI in bios.
 
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Thanks guys, I figured it out. I had two problems really. When I went to turn on AHCI the first time, I already had my secondary data drive connected to the SATA 7/8 port, which messed everything up and made me think I wasn't turning AHCI on for the right controller. Turns out I was, but I had to move all of my drives back to the Intel SATA 1 through 6 ports. Once I did that, everything was detected properly, but then my second problem was needing that registry key change which I had no idea was necessary. I would like to think I am pretty technical, but I am obviously a noob to system building since I had never heard of AHCI.
 
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When you install Windows, was AHCI enabled in BIOS? If the answer is no, I recommend that you re-install Windows again.
 
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Usually, I'll re-install to be on the safe side. If the registry works, then it should be fine for you ;).
 
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