Enable TRIM support in 10.9

[mayuka]

Hi.

I searched everywhere. The old command to enable T.R.I.M. support for non-Apple SSDs does not work anymore on 10.9 Mavericks. Do you know the new command?

I'm using:

sudo perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00{1,20})[^\x00]{9}(\x00{1,20}\x54)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

 

[mjcharlton71]

The old command to enable T.R.I.M. support for non-Apple SSDs does not work anymore on 10.9 Mavericks. Do you know the new command?

I found it easier to use the free version of Trim Enabler and have it run on startup.... that way once the patch is enabled, if the machine's restarted following OS level patching and TRIM is disabled on non-Apple SSDs (or any other reason), the app warns you so you can switch it on again.

 

[ammusk]

I used v3.1.2 of Trim Enabler to enable TRIM after installing 10.9 and it works as expected.

http://www.groths.org/software/trimenabler/

 

[mayuka]

That one worked. However, I really would like to know the new string. It would make things easier and I don't have to purge the drive from a silly helper tool.

 

[ammusk]

It would make things easier and I don't have to purge the drive from a silly helper tool.

Purge the drive? What do you mean?

 

[pastrychef]

sudo perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00{1,20})[^\x00]{9}(\x00{1,20}\x54)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

 

[mayuka]

Purge the drive? What do you mean?

TrimEnabler installs a helper tool. I don't want to keep the app on my hd, because I want as much free space as possible (even the 256 GB are pretty much filled). Too bad it doesn't offer an uninstall option.

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sudo perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00{1,20})[^\x00]{9}(\x00{1,20}\x54)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

Unless I'm not mistaken that's the exact same string I posted earlier and it doesn't work.

 

[pastrychef]

It worked for me. I have TRIM enabled in Mavericks.

 

[ammusk]

TrimEnabler installs a helper tool. I don't want to keep the app on my hd, because I want as much free space as possible (even the 256 GB are pretty much filled). Too bad it doesn't offer an uninstall option.

With the latest 3.1.2 update the menu helper was removed.

Am not able to find any release notes for the same, but I remember this quite well.

It now works like a standard (non menu) app.

Here's an alternative to trim enabler:
http://chameleon.alessandroboschini.it/index.php

Although I don't use it, it's supposed to be better and less intrusive.

It's free unlike TrimEnabler.

 

[crjackson2134]

I just wish I had an SSD to try it out on.

 

[mayuka]

It worked for me.

Strange. The command didn't work on my Mac mini + Samsung 830.

Whatever. I have enabled it now and I will keep my eyes open for a changed command. Thanks anybody involved.

 

[pastrychef]

Strange that it didn't work for you. I wonder what the differences are between your system and mine.

 

[squeakr]

I use the chameleon SSD optimizer app and it worked in Mavericks and said trim was enabled, but ow I wonder as I can't see where it reports it enabled or not?? It used to show within the System report, but I am not seeing anything there about trim???

How would I tell, does someone have a terminal command I can run to see if it is truly enabled??

 

[pastrychef]

System Profiler still shows it for me.

 

[squeakr]

That's odd. Neither of my systems that has an SSD on it is showing the Trim information in the system information. It used to have an entry that said "Trim Enabled:" and then reported Yes or no accordingly. That line of information is no longer there. Weird???

 

[pastrychef]

I have no explanation...

 

[mayuka]

In the system report of my Mac Mini 2011 the line was always there. When I used the command it still said "No" after reboot. After using TrimEnabler the line said "Yes". Maybe you are confusing the hard disk with the ssd? I've seen switching disk0 / disk1 when I first installed the ssd to my Mac mini a year ago with 10.8.

 

[pastrychef]

No, that's definitely the SSD. 512GB Crucial M4. Perhaps the fact that it is on a PCI-e SATA 3 card is the difference?

 

[pastrychef]

Figured it out...

First:

sudo perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00{1,20})[^\x00]{9}(\x00{1,20}\x54)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

Then:

sudo touch /System/Library/Extensions/

Reboot.

 

[mayuka]

thanks

 

[pastrychef]

 

[Chazz08]

Figured it out...

First:

sudo perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00{1,20})[^\x00]{9}(\x00{1,20}\x54)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

Then:

sudo touch /System/Library/Extensions/

Reboot.

The Chameleon program didn't work for me, but this did. TRIM enabled. I never knew about TRIM though. It's new to me....I just recently got an SSD back in June, so I hadn't really known much about them. Now that it's enabled, I've noticed that when I delete something, it doesn't stay in my trash bin, is that correct?

From what I've read about it, I like the idea.


[Edit] Never mind, just another bug. My trash bin wasn't filling up on the dock when I deleted something, but the files are in there. Weird.

 

[widestload]

Figured it out...

First:

sudo perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00{1,20})[^\x00]{9}(\x00{1,20}\x54)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

Then:

sudo touch /System/Library/Extensions/

Reboot.

Does this just get copied into terminal (and password entered along the way to get it to run)? Or does something else need to be done with it?

 

[pastrychef]

Copying to terminal works fine.

 

[kensic]

Figured it out...

First:

sudo perl -pi -e 's|(\x52\x6F\x74\x61\x74\x69\x6F\x6E\x61\x6C\x00{1,20})[^\x00]{9}(\x00{1,20}\x54)|$1\x00\x00\x00\x00\x00\x00\x00\x00\x00$2|sg' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage

Then:

sudo touch /System/Library/Extensions/

Reboot.

does Apple use these commands (or something simliar) to enable trim on their SSD's?


I like the idea of enable trim on non-apple ssd's w/o using 3rd party solution