SSDs and Mountain Lion

[Oli3000]

I cannot get this working on my 21 mid 2011 iMac. I create the backup, run the permissions in terminal, open the file in system/library/extensions and edit the first APPLE SSD string (which has macbook air etc. after it), save it, run the following lot of code and reboot. No change, and no errors!

I'm using an Intel 335 240gb SSD - the ID for it in system report is INTEL SSD so that is correct, and the edited file displays the edit after reboot, so it is not reverting for any reason!

Strange!

 

[YuckAndMuck]

I cannot get this working on my 21 mid 2011 iMac. I create the backup, run the permissions in terminal, open the file in system/library/extensions and edit the first APPLE SSD string (which has macbook air etc. after it), save it, run the following lot of code and reboot. No change, and no errors!

I'm using an Intel 335 240gb SSD - the ID for it in system report is INTEL SSD so that is correct, and the edited file displays the edit after reboot, so it is not reverting for any reason!

Strange!

Per my earlier post: After making the change to the Intel SSD, did you try booting from an alternate/external drive and then booting again from the Intel SSD? I don't know why doing this matters, but it was the key for me. Hope it helps.

 

[davidlv]

I cannot get this working on my 21 mid 2011 iMac. I create the backup, run the permissions in terminal, open the file in system/library/extensions and edit the first APPLE SSD string (which has macbook air etc. after it), save it, run the following lot of code and reboot. No change, and no errors!

I'm using an Intel 335 240gb SSD - the ID for it in system report is INTEL SSD so that is correct, and the edited file displays the edit after reboot, so it is not reverting for any reason!

Strange!

I am running the Intel 335 240GB in my MBP, used ChameleonSSDOptimizer to enable trim, works fine. Enabled noatime too.
http://chameleon.alessandroboschini.it/index.php

 

[Oli3000]

Chameleon just gave me a non-booting computer! I installed ML on my other HDD and corrected the extensions from there.

I do have it working now! Worked out I was an idiot and was replacing the patched file at the wrong location... Now all sorted! Thanks!

 

[schrott]

it also works with the update 10.8.5

Thanks You shurcooL!!

I'm happy that it works again!
WinKom Pro 240GB - Sata3 - Intel NAND flash sandforce controller 2281, MacBook Pro mid 2012

 

[IrvineKwang]

How about OSX 10.9??

Hi everyone,

Will this steps also work with OSX 10.9?

Thanks!

 

[schrott]

YES it works on 10.9 maverick ! Like every time!

1. Datei "IOAHCIBlockStorage" Schreibschutz mit "Rechtsklick" entfernt bzw. meinen Benutzer*mit Schreibrechten*hinzugefügt.
—> /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

2.Datei "IOAHCIBlockStorage" mit*HEX FIEND (download aus Internet) mit "Rechtsklick" öffnen und über Dateisuche*"APPLE SSD" -> „Name SSD“ (exakt 9 Zeichen, nicht mehr) überschreiben und danach abspeichern (Original überschrieben).

3. Schreibschutz wieder entfernt bzw. meinen Benutzer entfernt.

4.*run this in the terminal (to force your changed file to be used by the system): Passwort für*meinen*Benutzer*wird*abgefragt
Code:
sudo touch /System/Library/Extensions/

5. Neustart

 

[shurcooL]

10.9.1 also. Same as before.

The news of Ubuntu 14.04 having TRIM on by default reminded me to do this again; I've stopped keeping track as of a few updates ago lol.

 

[Val-kyrie]

10.9.1 also. Same as before.

Image

The news of Ubuntu 14.04 having TRIM on by default reminded me to do this again; I've stopped keeping track as of a few updates ago lol.

Is this method going to work on Yosemite? Or does kext signing have to be disabled?

 

[shurcooL]

Is this method going to work on Yosemite? Or does kext signing have to be disabled?

Good question.

I haven't tried yet, but I might. If so, I'll let you know if it still works.

 

[shurcooL]

Ok, I just tried it on OS X Yosemite, 10.10 (Build 14A389)... and it didn't work.

There were no messages after "sudo touch" step, but when I restarted, it couldn't detect my disk, so I got this:

Nice graphics though.

Anyway, I booted into the Recovery mode (hold Cmd+R when booting), opened a terminal and moved my backup file back, sudo touch, and I'm back to a working Mac.

But I certainly wouldn't recommend trying this on OS X 10.10. Unless you know what you're doing.

Edit: Read this for the explanation: http://www.cindori.org/trim-enabler-and-yosemite/

Personally, I'm okay with TRIM off on my Intel SSD. It's still fast enough that I don't need to worry, and I'm sure it will survive another few years until I get a new rMBP with a built in flash drive.