Enabling TRIM for SSD drive in MacBook Pro

hoogie · 30 Nov 2013 at 19:48

Hi All,

I have been looking at upgrading to an SSD for some time and have now decided to go ahead with the upgrade.

The last thing I am looking into is enabling TRIM so that the drive works correctly and I am finding mixed messages across the internet.

I have found some stories indicating people have run into issues and the drive becoming very slow over time.

Whilst other articles have said you simply have to download and install some software called "TRIM enabler" and set it to "On".

What would you say the situation is? Is it as easy as just downloading and running trim enabler? Or are there other considerations/risks?

Thanks

Tweaker · 30 Nov 2013 at 19:58

When I had a Corsair SSD, I used the trim app, after a year of abuse there was no slow down.

hartgeh3 · 6 Dec 2013 at 18:27

I used the Trim enabler on my Samsung 830 but it would always reset under OSX 10.9, tried this in Terminal and works spot on..

Open Terminal enter:

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, enter your password

Then,

sudo touch /System/Library/Extensions/

Reboot.

Caged · 6 Dec 2013 at 19:12

If you haven't bought the drive yet then get one with a Sandforce controller and don't worry about TRIM.

lamboman · 6 Dec 2013 at 22:20

Caged said:
If you haven't bought the drive yet then get one with a Sandforce controller and don't worry about TRIM.

All the drives you'll buy now have some form of garbage collection that actually works to the point where you don't need to worry about TRIM. The Sandforce drives were pretty much the best in this regard but unless you're talking constant writes to the drive, the average Joe or Jane won't have any need to enable TRIM.

In short, no harm in enabling it, though if you can't be bothered you'll be absolutely fine.

MagicBoy · 6 Dec 2013 at 23:46

lamboman said:
In short, no harm in enabling it, though if you can't be bothered you'll be absolutely fine.

This.

I've run with and without TRIM on an Crucial M4 and noticed no difference whatsoever.

adscan · 8 Dec 2013 at 10:40

Just installed a Samsung 840 EVO into my MBP. Do i need to worry about TRIM on this drive? Seems to be running fine as it is.

Conanius · 8 Dec 2013 at 15:02

Do you actually need to do this TRIM stuff?

I've fitted a Samsung 840 EVO in my Mac Mini... should I be worried I don't have TRIM enabled?

lamboman · 8 Dec 2013 at 15:26

As above, don't worry about it, though you can if you want. No real advantage for "normal" usage though.