Hi, I got my Samsung 840 Pro 256GB SSD a this week, and installed Win8 via Bootcamp 5. Thereby I enabled ACHI using guide. Only I didn`t find the listed subkey, so I changed the ones under instead: HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services storahci Locate the Error Control entry which should have a value of 3. Right-click on the entry name, select Modify, change the value from 3 to 0 and click OK. Everything worked alright, and Samsung Magician shows that ACHI is enabled. Denon Rc 1075 Manual Arts. However, as a lot of the posters here, my computers freezes after being in sleepmode.

I have lenovo u410 and I assume it supports AHCI mode since I can choose that option from BIOS instead of RAID. Running WIN7.I applied the registry fix to enable. Tutorial: Enable SATA AHCI Mode in. Boston College Bc Uis on this page. I am writing a tutorial to enable AHCI mode for iMacs. If not then you did not follow the arrows or run the program as.

Its just stuck on the picture you have to press enter to get rid off in order to enter password (except the clock and date isn`t showing). A couple of times the computer BSOD`s.

The only thing working is moving the mouse arrow around. I have tried both Standard ACHI drivers and Intels drivers, same result with both of them. I am sorry if someone has postet the answer to this before, I have briefed trough the forum post, unable to find anything. I am on a MacBook Pro 15' Mid 2010, running Intel C2D 2,4Ghz. I have exactly same problem with Samsung SSD 840 500GB, everything runs well, but wake up is impossible from sleep, i can only move with mouse pointer for a while than BSOD comes:/. Hi All, I'd like to say thanks to all the posters regarding AHCI mode under Windows 7 on Mac Pros.

I have AHCI working now with my 2010 Mac Pro 5,1 and I'm seeing a significant speed boost for my SSD dedicated to Windows 7 Enterprise 64-Bit. I did run into an issue though where the SATA ports for drive bays 3 and 4 do not show any drives attached.

I'd like to be able to use all six ports if possible. Is there any way to enable those two ports or am I stuck in combo mode under AHCI with Windows 7?

My Drives are: Optical Upper: Apple stock DVD burner Optical Lower: 4TB HGST Hard Drive (for non-boot use; HFS+) Bay 1: 1TB HGST Hard Drive (for non-boot use; NTFS) Bay 2: 512GB Samsung 840 Pro SSD (Windows 7 Enteprise 64-Bit Boot; NTFS) Bay 3: 1TB HGST Hard Drive (for non-boot use; HFS+) >Bay 4: 512GB Samsung 840 Pro SSD (MacOS X 10.8.4 Boot) >FYI (and unrelated to my Mac Pro post) - I've checked the 2012 MacBook Pro (Retina) and 2012 11' MacBook Air and found that both seem to have AHCI enabled by default under Windows 7 Enterprise 64 Bit. Both are using the same chipset for storage. I am using the Intel Storage Matrix v8.9 drivers.

For the drives that show up (optical upper optical lower, bay 1 and bay 2), performace is better under AHCI. I do seem to recall that the SATA controllers are different in the 5,1 (ICH10R) vs.

An older ESxxx controller but not sure if that matters in this case but I suspect it might in terms of patching the MBR. I did see a post somewhere (I can't seem to find it again) that mentioned a code change to the MBR patch to disable combined mode under the AHCI on the 5,1. I used patchedcode.bin to patch the MBR but not sure if it was the latest version floating around out there or not or if there is a version for ICH10R Mac Pros. Any thoughts? Here is a BETA of the new AHCI Enabler tool. It is designed to replace the script used previously.

This has been tested with all Intel chipsets used so far by Apple. The program also includes the ability to backup and restore your MBR.

I recommend you do this, since this program is still BETA. Use at your own risk!