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How to: Change SATA Modes After Windows Installation - Page 4

post #31 of 91
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Quote:
Originally Posted by timoteo View Post

Thanks, Sean for your detailed response. Just a few follow-ups ...
Quote:
Originally Posted by Sean Webster View Post

If your OS is on the Intle ports and not the marvell you can change the marvell chipset's SATA mode without any registry changes and then set up the raid array on it...I never used the marvell ports myself for that so i can't guide you through setting up the array on those ports.

I thought so, but in the Bios there is only one setting for turning RAID mode on or off, although I thought this was just for the Intel. There is a CTRL-M option during post that is supposed to be used for the Marvell, which I tried, but something flashes up on screen for only a brief moment and then it goes right into Windows startup. Two possibilities here ... one, you have to turn on RAID for EVERYTHING for that to work (which would suck), OR because there are no drives hooked up, the Marvell bios doesn't load and that may be what the brief message is saying.
the options for the marvell controller may be located under third party options or something separate from the SATA config settings.

Quote:
Quote:
Yes. TRIM works when the sata mode is set to RAID. However, it does not on most chipsets when there are SSDs in a RAID array. Having drives in a RAID array is different than just having the SATA mode set to RAID.

Ahh, ok ... gotcha. Definitely an important distinction. Right, I would not have my SSD in an array obviously. So TRIM should still work. How does one verify TRIM is indeed in place and working?
Really there isn't a simple fool proof method. Just as long as it is enabled in windows, which, it is by default, and the driver supports TRIM you are set.

Quote:
Quote:
It doesn't affect read times much of at all. Mainly writes after heavy use.

That's what I originally thought, but then I read some articles which seemed to indicate the contrary.
The only time when reads will be affected much is during garbage collection as it would use up controller bandwidth/resources.
Quote:
Double the seq. speeds.
Quote:
So an SSD on AHCI is slower than an SSD on RAID?
No, they would be the same if you just change the sata mode.
Quote:
Or do you mean an SSD on a RAID0 array? That I can definitely see.
Yes when you take 2 it will be double in RAID 0
Quote:
Quote:
Marvell will have a max of 400MB/s with a single drive or a RAID 0 array because the PCIe x1 bandwidth limits it.
intel chipset will have 1GB/s max seq. speeds.

Ok, well, while not as fast as the Intel, I'm sure the drives I have
Quote:
Ewww, no windows software RAID is liked lol.
I have seen some benchmarks in the meantime that suggest otherwise or very, very close. I guess I could just try both (assuming I can get the Marvell to work) and see which is better. The Marvell is fakeraid anyway (as is the Intel). From what I've been reading the difference between this and 100% software RAID or close to nil, and that software RAID has come a long way in recent years and might be ideal for non-enterprise setups.
I don't like it still. I like hardware RAID, Intel firmware RAID, or Linux solutions.

Quote:
Originally Posted by timoteo View Post

HI:

Ok, I tried both the Marvell RAID0 (which by the way, you just have to hit the CTRL-M at just the right time) and and Win7 software RAID0 setup, and as I expected (from doing research) the Win7 software RAID0 is just as "good" as the Marvel "hardware" (really fakeraid). I'm avoiding going with the Intel if I absolutely don't have to.
Why is that? Do you not have enough ports?
Quote:
The results were about what I would expect from a two-drive 7200rpm RAID0 array (2x Caviar Blacks) performance-wise, except in one area] : The write speed is significantly lower than the read speed. I'm getting ~280MB/s seq. read (1000MB file size), but only ~135MB/s sequential write. Like wise for a 50MB test, I'm getting ~375MB/s read, but only ~120MB/s write.
Ewww, you should be getting 2x the slower drives write speed.
Quote:
Any idea why the writes would be so low? Could it have anything to do with having a completely empty drive? (I would think that would be a good thing and have the opposite effect.)
Empty drive should be faster. How are you benching? Crstal disk mark what what you described right?
Quote:
Or does this indicate some other problem? I forget are there separate read/write head(s) in HD's?

Thanks,
Tim

PS> Sorry if I am hijacking this thread, I can start this in a new one if need be.
There are separate read heads for the different platters, however they are all on the same actuator arm.
Quote:
EDIT: Tested another single Caviar Black (95MBs/92MB/s) and a Blue (81/80), which is more like what I would suspect. However my SSD drive IS something like 454/285. So maybe it is just the case with faster drives that the write is a lot slower?? Although I could have sworn I saw other peoples 2x RAID0 Crystalmark scores with much higher write speeds.
Speeds should be ~2x the slower drives. When you have drives of different speeds that adds a little bit more complexity/strain on the controller and it will increase overhead. Thus a little slower writes, however I'd think you get a little better results.
post #32 of 91
I followed this guide, but still get BSOD when switching to RAID mode. I followed the "Change to RAID from AHCI". Changed the IAstorV file from 3 to 0. The other two files were already at 0. Funny thing now is, i did apply a volume and quick format the the RAID drive in disk management and its a heatly drive now but doesnt show up in IRST?

Setting up a sep raid on two raptors. Currently have a crucial m4 as my OS drive on the RIVE board connected to intel 6gb port. Raid is on intel 3gb ports.
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post #33 of 91
Make sure that you switch over to the raid drivers before you reboot the computer after making the registry changes.

At a last resort, you could possibly perform a OOBE Sysprep.
    
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post #34 of 91
my RAID mode stopped working (Disk read error has occured).

Hi All!

1. I need some serious help here. I have run Intel SRT with success for quite a while now but the ***** just hit the fan.
During normal operation (gaming) my system hang to the point where I had to do a manual restart. It was the game that crashed
since I was still able to move my mouse around but was not able to get into task manager or alt-tab my way anywhere.

2. I'm running a WD black 1 TB accelerated with Intel SRT with an m4 SSD 64GB. I set this up a while ago using registry hacks
and it worked like a charm. But now...after the manual restart things seem to be corrupted. I wasn't able to boot into windows
anymore and did everything to try and fix it (windows startup repair, CMD commands, rebuilding MBR etc.) Eventually I was able to fix it by going in
the RAID OPROM bios and disable acceleration and resetting the disks to NON-RAID.

3. Being back inside windows I have re-installed all the raid drivers, intel rapid storage utility etc. I have also updated my bios to the latest
(Asus P8Z68-V @ 3603). The problem is that I want to re-enable Intel SRT since it significantly sped up my system. But I can only boot successfully
when SATA mode is set to AHCI. When I set my bios to RAID I get the following message: "A disk read error has occured, Press CTRL+ALT+DEL to restart".
My KB is also unresponsive at this point so I hit the restart button, set my bios back to AHCI and all is peachy again.

I've spent countless hours researching this and haven't found a solution yet! So to RECAP:

* Intel SRT worked flawlessly until manual reboot corrupted something in the RAID.
* Disabling acceleration in RAID OPROM and resetting to NON-RAID brought me back into Windows 7 X64
* AHCI mode is the only mode that gives me a successful boot, RAID mode gives: "A disk read error has occured, Press CTRL+ALT+DEL to restart".
* BIOS, Windows, RAID drivers are all up-to-date.
* RAID enabled through Registry hacks (has been operational for over a year).

system specs:
MOBO: ASUS P8Z68-V
HDD1 port 1: WD Black 1TB
SSD 1 port 2: Crucial M4 64GB
Optical drive port 3: DISABLED
eSata port 4: DISABLED
HDD 2 port 5: WD 250GB
HDD 3 port 6: WD Black 640GB
additional specs are in my sig below.

I'm at a loss here and preferably don't want to re-install my entire system. I don't think it'll do anything but I'm running a full CHKDSK now. If there's anyone that could help me I would be eternally grateful!
    
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post #35 of 91
/fixed.

install EVERYTHING, reboot, set your sata mode to RAID, boot up Win 7 from Recovery CD...and once again:
bootrec /fixboot
bootrec /fixmbr
bootrec /rebuildbcd

Just to be sure I also added the RAID drivers again from recovery menu under "Load Drivers".

cheers
    
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post #36 of 91
I am currently running Windows 7 in AHCI mode. I need to temporarily set the SATA controller to IDE mode (there is a program, HDD regenerator that supposedly works better with the HD in IDE mode)

Somewhere else (http://www.sevenforums.com/hardware-devices/165671-enable-disable-ahci.html) I read that

FOR IDE:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci; START=3
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\pciide; START=0

FOR AHCI:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci; START=0
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\pciide; START=3

1. Is it necessary to change both the msahci & pciide keys?

However, in my case, I HAVE:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci; START=0
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\pciide; START=0

2. Why could that be? Should I change my registry to the values above (for IDE and AHCI)?

Edited by viking55 - 5/8/13 at 4:19pm
post #37 of 91
Quote:
Originally Posted by Sean Webster View Post


How to: Change SATA Modes After Windows 7 Installation




Windows 8

Change to AHCI mode from IDE mode: Warning: Spoiler! (Click to show)
Link to some other info here: (link)

Regedit:
  1. Exit all Windows-based programs.
  2. Press [Win] + R or take the RUN option from the start menu.
  3. Now type Regedit there and press Enter Key to open up the Registry Editor Window. (If you receive the User Account Control dialog box, click Continue.)
  4. Locate and then click the following registry sub keys:
    Code:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storahci
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storAHCI.sys\StartOverride
    
  5. In the right pane right-click Start in the Name column and then click Modify.
  6. In the Value data box, type 0 [3 is default], and then click OK.
  7. On the File menu, click Exit to close Registry Editor.
  8. Restart your computer
  9. Go to UEFI/BIOS and enable AHCI, Save & Reboot
  10. Another restart will be required to finish the driver installation.

Hi

New member and I found your guide in a desperate search to fix a problem that Dell left for me. I have an Inspiron 15R SE, had the HDD replaced after 3 days of ownership...and the Dell engineer rebuilt the laptop incorrectly. I have a 32Gb mSATA SSD which used Intel Smart Response Technology and Intel Rapid Start Technology. Both were working before the HDD died. I noticed that neither was installed after Dell rebuilt the laptop so I now have a 32Gb SSD being wasted.

I have Windows 8 and thought that I could use your guide to enable ISRT without needing to reinstall Win 8. However, I'm not that knowledgable about these things and was about to try the Win 7 registry change when I came across this.

My question is what change do I need to make to the registry so I can change my BIOS SATA Operation mode from AHCI to Intel Smart Response please? I'm assuming it would be different from the example you list, for changing from IDE to AHCI.

Thanks in advance.
Edited by mfl3 - 6/28/13 at 7:55am
post #38 of 91
Quote:
Originally Posted by mfl3 View Post

Hi

New member and I found your guide in a desperate search to fix a problem that Dell left for me. I have an Inspiron 15R SE, had the HDD replaced after 3 days of ownership...and the Dell engineer rebuilt the laptop incorrectly. I have a 32Gb mSATA SSD which used Intel Smart Response Technology and Intel Rapid Start Technology. Both were working before the HDD died. I noticed that neither was installed after Dell rebuilt the laptop so I now have a 32Gb SSD being wasted.

I have Windows 8 and thought that I could use your guide to enable ISRT without needing to reinstall Win 8. However, I'm not that knowledgable about these things and was about to try the Win 7 registry change when I came across this.

My question is what change do I need to make to the registry so I can change my BIOS SATA Operation mode from AHCI to Intel Smart Response please? I'm assuming it would be different from the example you list, for changing from IDE to AHCI.

Thanks in advance.

ISRT uses RAID mode, so if Dell installed Windows in AHCI mode, you'll need to use this guide to change to RAID mode, and of course install the Intel IRST RAID driver.

There isn't any registry entry for ISRT specifically. ISRT is a new type of RAID 0 array, and therefore the PC must be "RAID Ready" as Intel calls it, meaning the SATA mode must be RAID with the Intel IRST RAID driver installed.

You are changing from AHCI or IDE to RAID mode, so that is the guide you need to follow. I did notice there is a small omission in the Windows 8 guide, that I'll describe for you. Windows 8 uses a different AHCI driver than Windows 7. The Windows 8 AHCI driver is call storahci, while the Windows 7 AHCI driver is msahci. For Windows 8, simply find storahci instead of msahci. That's it.

Yours is the second story I've read recently about a laptop manufacture that replaced a bad HDD, with the PC hardware configured for ISRT, and that was ignored by the tech. They just installed Windows on the HDD, in AHCI mode, and did not set up ISRT. Unless they consider that a user option they don't support.
post #39 of 91
Thank you! I thought there would be a different process or registry entry for moving from AHCI to RAID, but not having any knowledge of Windows Registry, didn't want to even guess.

I'm also trying to understand the other link that you posted for Windows 8, for changing from ATA to AHCI. Would the same process work for changing from AHCI to RAID? What is the difference between the process that you described and that Windows/Microsoft solution?

Thanks again.
post #40 of 91
Hi,

I followed these instructions but could not able to change the SATA mode from AHCI to SATA. I changed all registry entry that I could find (only 2 our of 3) as directed.
My Windows 7 64bit OS was installed using SATA mode as AHCI, now when I change it as per instructions to SATA my HDD disappears from the boot list and only 24GB SSD is listed.
How should I enable both HDD to appear in boot list so that OS loads as it is??

Cheers,
Vimal
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