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IDE to ACHI - Page 2

post #11 of 32
Quote:
Originally Posted by Maco88 View Post

I have a question on this subject.
I just finished a new PC build with a Samsung F3 1TB drive only on an ASUS P8P67 PRO mobo. Everything went well and system is up and running with Windows 7 - 64bit. All drivers have been installed and in the past couple of days I have slowly start to install the basic stuff, like AV, firewall etc.
Playing with the BIOS today I came across the SATA Mode and saw that mine was set to IDE. Being my drive in not an SSD it does not matter, however I have read even so, ACHI is a preferred setting.
Then I see that to change to ACHI the method ranges from a fresh install to a registry modification which looks easy enough.
However my question is, I changed from IDE to ACHI in the BIOS and rebooted. Everything so far (only 30 minutes) seems to be working fine. Should I expect BSOD or other related problems or should this have already happened???
I am simply curious, as when I eventually do get an SSD I do plan a clean fresh install on it and with ACHI enable beforehand.
Cheers

This wounderful HotFix from Microsoft to handle this. It works wounder's. I have used it a few times to fix a botched install. Very simple to use, download and run. After it install's reboot and check the setting in the BIOS to make sure it is set for AHCI mode. Then your all done. Good luck.
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post #12 of 32
Thanks for that KK.

Strange thing is I am still getting no errors or any BSOD, lockups etc.

Everything seems to be working fine, and as I described, just curious as to why many people have had issues and I am not experiencing any myself (yet).

Cheers
post #13 of 32
Quote:
Originally Posted by Maco88 View Post

Thanks for that KK.

Strange thing is I am still getting no errors or any BSOD, lockups etc.

Everything seems to be working fine, and as I described, just curious as to why many people have had issues and I am not experiencing any myself (yet).

Cheers

Post a screen shot of AS SSD.

What motherboard do you have? You may have 2 SATA controllers and the one you changed is not connected to the OS drive.
post #14 of 32
Quote:
Originally Posted by Sean Webster View Post

Post a screen shot of AS SSD.
What motherboard do you have? You may have 2 SATA controllers and the one you changed is not connected to the OS drive.

Sorry I somehow lost track of this post, but I just checked the BIOS under ADVANCED \ SATA Configuration.

Under "SATA Configuration" there is only the single option to select IDE or ACHI or RAID modes, so I would say it is the only one i could change that must be controlling my HD.

My mobo is an ASUS P8P67 Pro.

Cheers
post #15 of 32
Quote:
Originally Posted by Maco88 View Post

Quote:
Originally Posted by Sean Webster View Post

Post a screen shot of AS SSD.
What motherboard do you have? You may have 2 SATA controllers and the one you changed is not connected to the OS drive.

Sorry I somehow lost track of this post, but I just checked the BIOS under ADVANCED \ SATA Configuration.

Under "SATA Configuration" there is only the single option to select IDE or ACHI or RAID modes, so I would say it is the only one i could change that must be controlling my HD.

My mobo is an ASUS P8P67 Pro.

Cheers

You definitely have two SATA controllers on your motherboard. The native Intel and the third party Marvell.

Post a screenshot of AS SSD: http://www.alex-is.de/PHP/fusion/downloads.php?cat_id=4&download_id=9
post #16 of 32
Quote:
Originally Posted by Sean Webster View Post

Quote:
Originally Posted by Maco88 View Post

Quote:
Originally Posted by Sean Webster View Post

Post a screen shot of AS SSD.
What motherboard do you have? You may have 2 SATA controllers and the one you changed is not connected to the OS drive.

Sorry I somehow lost track of this post, but I just checked the BIOS under ADVANCED \ SATA Configuration.

Under "SATA Configuration" there is only the single option to select IDE or ACHI or RAID modes, so I would say it is the only one i could change that must be controlling my HD.

My mobo is an ASUS P8P67 Pro.

Cheers

You definitely have two SATA controllers on your motherboard. The native Intel and the third party Marvell.

Post a screenshot of AS SSD: http://www.alex-is.de/PHP/fusion/downloads.php?cat_id=4&download_id=9

I believe you may have change the mode on the controller which your OS drive is not connected to.

The BSOD would happen upon reboot if you did not do the registry edit and you could not get into windows in the first place.

http://www.overclock.net/t/1227636/how-to-change-sata-modes-after-windows-7-installation
post #17 of 32
Hi SW,

Couple of things:

1. AS SSD, is that only used for SSD drives, as mine is not an SSD drive. ??

2. I understand my board comes with 2 controllers, as you mentioned above. However I am slighly confused here, because in the BIOS settings, there is only 1 option tab to change from IDE to ACHI.

You could be right that I may have changed the mode on the controller my HDD is NOT connected to, but how do I change it on the "right" one, if there is only 1 there in the BIOS that can be changed.

Since there are 2 different controllers, should there be 2 options to change in the BIOS, depending on where the HDD is connected to ???

Cheers.


PS, I have not edited the registry as you mentioned above.
post #18 of 32
Quote:
Originally Posted by Maco88 View Post

Hi SW,

Couple of things:

1. AS SSD, is that only used for SSD drives, as mine is not an SSD drive. ??
No need to run the test, just post a screenshot of the program when it is opened.

Like this:

501

This tells me what SATA mode your SATA controller is set to and what SATA driver you are using.
Quote:
2. I understand my board comes with 2 controllers, as you mentioned above. However I am slighly confused here, because in the BIOS settings, there is only 1 option tab to change from IDE to ACHI.

You could be right that I may have changed the mode on the controller my HDD is NOT connected to, but how do I change it on the "right" one, if there is only 1 there in the BIOS that can be changed.

Since there are 2 different controllers, should there be 2 options to change in the BIOS, depending on where the HDD is connected to ???

Cheers.

PS, I have not edited the registry as you mentioned above.
Oh, but there are 2 places. wink.gif

264

273

If your drive is plugged into the dark blue SATA port (Marvell) then move it to a grey one (Intel SATA 6Gb/s) or a light blue one (Intel SATA 3Gb/s).

I suggest you just disable the Marvell SATA ports completely and only use the Intel, plus it will speed up boot time. smile.gif
post #19 of 32
First of here is a screen shot of my Drive using AS SSD.

398

As you can see I have it now back in IDE mode as I need to run a diagnostic test on the drive in DOS and I had to change it back to IDE for the drive to be seen.

These figures look quite slow to me????


Secondly, my drive is connected to the "Grey" port on my ASUS mobo, the 2 dark blue ports are empty, and from my previous posts, I did set the correct Sata setting it seems, changing from IDE to ACHI in "Sata Configuration" (but not doing the registry change)

Thanks for pointing out where the Marvel Sata port was. I didnt look there. Currently it is set exactly as your screenshot above. You suggest disabling this to gain some speed in boot times. I will try that, though I should make a note that these are "Disabled" if ever I want to use those 2 ports, yes???

My question out of all this is, would I get any/much benefit of changing over to ACHI from IDE in the BIOS???

Thanks again.
Maco88
post #20 of 32
Quote:
Originally Posted by Maco88 View Post

First of here is a screen shot of my Drive using AS SSD.

398

As you can see I have it now back in IDE mode as I need to run a diagnostic test on the drive in DOS and I had to change it back to IDE for the drive to be seen.

These figures look quite slow to me????
Looks pretty normal for a HDD. SSDs have no seek times, but HDDs must seek for anywhere between 3-30ms to reach a file, before they can even start reading it. Because of that you can't expect awesome 4K speeds. There's 1000ms in a second... divide 1000ms by 13.6ms (avg read seek) and you get 73.5 - the rough maximum number of seeks your drive can do in a second. SSDs are usually over 10,000 - some are over 100,000.

Quote:
Originally Posted by Maco88 View Post

Secondly, my drive is connected to the "Grey" port on my ASUS mobo, the 2 dark blue ports are empty, and from my previous posts, I did set the correct Sata setting it seems, changing from IDE to ACHI in "Sata Configuration" (but not doing the registry change)

Thanks for pointing out where the Marvel Sata port was. I didnt look there. Currently it is set exactly as your screenshot above. You suggest disabling this to gain some speed in boot times. I will try that, though I should make a note that these are "Disabled" if ever I want to use those 2 ports, yes???

My question out of all this is, would I get any/much benefit of changing over to ACHI from IDE in the BIOS???

Thanks again.
Maco88
You should definitely enable AHCI mode. Avoid the Marvell controller, even if you have to run SATA2 mode instead. The Intel ports are better.

AHCI enables NCQ, which allows drives to reorder up to ~32 requests. I bet your 4K QD64 results (right below the 4K results) would improve if AHCI and NCQ were enabled. If you enable it and it goes up, check and see how much it went up. Even a small amount like jumping to 0.98MB/sec would technically be a 70% increase, which means under heavy multitasking situations the drive will get its job done 70% faster.

It's unlikely you'll ever be under heavy multitasking situations for more than a second, but it does happen if you run enough software simultaneously. Even for single programs, it sometimes happens - for example, if I opened the NCIX sale page from their homepage banner ( http://ncix.com/ ), my drive would be sent many dozens of requests to fetch images from cache, which will definitely happen faster in AHCI mode rather than IDE. (NCQ will help rearrange the requests so that they complete in the optimal order.)


Edit: A quick test on my Hitachi 2TB.

Ideally it should be empty to get a more accurate test of its speed. I've got about 570GB of data on it right now, which means it's testing the drive about 570-600GB into the platter. (slower than on the very edge)

But regardless, you can see how AHCI mode helps its read speeds under heavy queue depths. (AKA Multitasking)

asssdahciv1642373050812.png

122% higher 4K read speeds. NCQ boosts its speed to 222%.
Edited by Kramy - 7/3/12 at 1:38am
     
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