Crucial ssd enable trim?

How do you enable trim when installing new ssd?
Booting from mountain lion on external thumb
No time machine backups all important files have already been backed up

here's the pic of my system info:
[URL=http://imageshack.us/photo/my-images/692/screenshot20130326at249.png/][IMG]http://img692.imageshack.us/img692/3509/screenshot20130326at249.png[/IMG][/URL]
Uploaded with [URL=http://imageshack.us]ImageShack.us[/URL]
as u can see it is an apple ssd....it's something that i got from a friend that is a servicer here..
anyway...he doesn't know how it work's...

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Should I enable trim support on Crucial M4 512?

I've got a Macbook Pro 10.8.2 , mid 2010 , with a Crucial M4 512 SSD installed.
Is there a benefit in trying to enable trim support?
Thanks, Jon

I also wasn't impressed. Sometimes hangs etc.
I enabled trim and now everything seems faster. May be the reboot.
I tested performance before and that seemed good for copying a file or so, but not for lot's a file access.
I ran in 1 terminal : iostat -d 1
in another : mkfile 1g empty
cp empty empty2
that looked great.
anyways, happy with trim now.

Enable TRIM on Samsung SSD 840, is it necessary?

This type of question has been asked a lot of times, I know, but I would like to receive some advice from experts.
Few weeks ago I installed my Samsung SSD 840. People say that it's not necessary to enable TRIM for such type of SSD. Others say that it allows to maintain the life of the SSD. So, what do you think about? What way to follow?
Note that in this case TRIM would be enabled by third part apps (TRIM enabler or Chameleon) and not by Apple.
Thank you in adavnce.

TRIM does not improve performance. Do a google search for TRIM and read up on it. Is it necessary and a good thing to have enbled? I say yes it is even if the drive does some garbage collection. If TIRM was not needed or not good for the drive apple would not auto enable it on ssd's that are branded by apple. Neither would windows 7 auto enable trim when windows sees a ssd installed.
mac_giabber wrote:
Kappy,
Thank you for yur reply.
If I enable the TRIM, what about the performance? Will it improve or not? IMHO, this would put an overhead on the SSD. What do you think about?
Thank you again.

[solved] enable trim on ssd

this link from the wiki says i should edit my /etc/fstab in order to enable trim on my ssd.
this is my /etc/fstab
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
# UUID=6b44daaa-610c-4f23-a632-569d091e4d43
/dev/sda1 / ext4 rw,relatime,data=ordered 0 1
should i replace 'rw,relatime,data=ordered' with 'defaults,noatime,discard' or appent 'discard' to the options?
Last edited by aldoiljazi (2013-09-18 19:42:05)

@ploub, thanks!
another thing i want to make sure is trim support for my ssd. i have this one. the 64gb version.
i don't seem to find a certain source online, even the sandisk's page doesn't mention anything.
is there a test i can run?
edit: it does support trim, just for reference i used "hdparm -I /dev/yourssd" as root and i got:
Data Set Management TRIM supported (limit 8 blocks)
somewhere in the output.
Last edited by aldoiljazi (2013-09-18 19:41:42)

Enable TRIM on SSD Mac OS X Mountain Lion

I recently purchased and installed a Samsung SSD 840 Pro series on my MacBook Pro. I was reading up on SSDs and I heard something about enabling TRIM and how it makes the SSD last longer. How can I enable TRIM on my SSD on my MacBook Pro that's running Mac OS X Mountain Lion?

TRIM is necessary as SSD have limited writes, so the new written data has to go to a less frequently used spot on the SSD.
It's a real shame Apple doesn't automatically enable TRIM on non-Apple SSD's, it knows when it formats it that it's one as it won't enable scrubbing.
http://www.mactrast.com/2011/07/how-to-enable-trim-support-for-all-ssds-in-os-x- lion/
Secure erase data on a Solid State Drive?

So I've changed my hard drive for an ssd and now I've been told to enable trim now I've got the apple cover will they show me how to enable it with out some program of the internet ?

so I've changed my hard drive for an ssd and now I've been told to enable trim ? now I've got the apple cover will they show me how to enable it with out some program of the internet ?

Use an app called chameleon ssd optimizer.
I enabled trim with it after almost a year of having installed a Samsung 840 pro SSD and my read/write speeds almost quadrupled.
I would definite;y advise using it even though Samsung SSD's come with there own garbage disposal.
Hope that helps.

Enable Trim Command for SSD

How can I enable Trim Command for SSD in my Windows 7 O/S?

Unfortunately, using "fsutil behavior set disabledeletenotify 0" will not tell you if TRIM is actually working.
How do you know it is not already working?
You can try using this tool to check
http://files.thecybershadow.net/trimcheck/
Copy the exe you download to a folder on the drive you wish to test (eg c:\test) and double click it. Follow the instructions.

If I get one of the Toshiba SSDs and put it in my 2011 MBP, will it auto enable trim support?

If I get one of the Toshiba SSDs and put it in my 2011 MBP, will it auto enable trim support?

It is outrageous that Appe deliberately does not enable TRIM support native to the OS to non Apple SSD drives automatically. Even worse is to cancel it after an update of the OS.
It is forcing anyone who does not add up to your greedy aftersales target to eventually experience trouble with their non Apple drives.
It is monopoly, isn't it?
It does also sounds petty, very disgusting from such a reputable company.
I love Apple but they do not need to go down such length to whatever are their aims.
Very disappointed to find out that the TRIM support I enabled prior to the update 10.9.3 is now disable.
Simply unbelievable!

Does new 2012 mac pro ssd need trim enabler

does new 2012 mac pro ssd need trim enabler

Welcome to the Apple Support Communities
If they need TRIM (I think that the flash storage included with the MacBook Pro does not need TRIM), Apple turns it on by default with the MacBook.
However, there are some people that doesn't recommend TRIM because it may hurt (rather than improve) performance > http://blog.macsales.com/11051-to-trim-or-not-to-trim-owc-has-the-answer

Anyone running 2009 MP with SSD without TRIM?

Does anyone have experience of running a SSD on a 2009 MP, without TRIM, without issues....if so for how long and which model?
Thx

OS X should by this time, but does not implement TRIM across the board, even though SSD has been around for 4 yrs and TRIM support in Windows has been supported since Windows 7 beta over 3 yrs ago. Is it only a matter of throwing a switch to support non-Apple ? that seems to be what TRIM Enabler suggests. Not if Apple is using proprietary firmware.
The SATA 3.1 specifications Queued Trim Command - allows SATA SSDs to execute Trim without impacting normal operation...
http://www.sata-io.org/technology/6Gbdetails.asp
Wikipedia SSD: "includes support for the TRIM command to reduce garbage collection for data which the operating system has already determined is no longer valid. Without support for TRIM, the SSD would be unaware of this data being invalid and would unnecessarily continue to rewrite it during garbage collection causing further wear on the SSD."
https://en.wikipedia.org/wiki/Solid-state_drive
https://en.wikipedia.org/wiki/Solid-state_drivehttps://en.wikipedia.org/wiki/TRIM
http://en.wikipedia.org/wiki/Write_amplification
I've seen Crucial m4 be loved and no love lost. Systems vary like people it seems.
Top tier and Apple uses Samsung and is highly rated so I would have no trouble recommending them
http://www.amazon.com/SAMSUNG-2-5-Inch-Internal-MZ-7PC128B-WW/dp/B0077CR60Q/
http://www.amazon.com/Kingston-SSDNow-120GB-SVP200S3-120G/dp/B006YLTY2O/
http://www.amazon.com/Kingston-SSDNow-240GB-SVP200S3-240G/dp/B006YLTLUY/
I have half a dozen Corsair, none with firmware bugs all are older SATA2 models.
The newest looks or sounds good and 180GB is a good value size
http://www.amazon.com/Corsair-Force-240GB-2-5-Inch-CSSD-F240GBGS-BK/dp/B008FSYUO 6/
MacRumors post: one of the best tutorials on SSDs and TRIM along with BGC.
Garbage Collection (GC) is the process of relocating existing data, deleting stale data, and creating empty blocks for new data
All SSDs will have some form of GC – it is not an optional feature
NAND flash cannot directly overwrite a page with data; it has to be first erased
One full block of pages has to be erased, not just one page
GC starts after each page has been written one time
Valid data is consolidated and written into new blocks
Invalid (replaced) data is ignored and gets erased
Wear leveling mainly occurs during GC
The OS tracks what files are present and what logical blocks are holding the files
SSDs do not understand the file structure of an OS; they only track valid data locations reported by the OS
When the OS deletes a file, it marks the file’s space in its logical table as free - It does not tell the drive anything
When the OS writes a new file to the drive, it will eventually write to the previously used spaces in the table
An SSD only knows data is no longer needed when the OS tells it to write to an address that already contains data
How Trim Works -
The OS sends a TRIM command at the point of file deletion
The SSD marks the indicated locations as invalid data
TRIM Features:
► Prevents GC on invalid data
► Increases the free space known to the SSD controller
TRIM Benefits:
► Higher throughput – Faster host write speeds because less time writing for GC
► Improved endurance – Reduced writes to the flash
Lower write amplification – Less data rewritten and more free space is available • TRIM does not generally work behind a RAID environment
Anandtech 2009 SSD tutorial - http://www.anandtech.com/show/2738/5
keeping 15-20% free will help (or figure how much you write to the drive in a month) seems if you get to 90% full can result in problems. Whether Durawrite or any other controller and firmware.

Enabling TRIM on MBP 2010 ?

Hello,
Few weeks ago i installed Corsair Force GT Sata 3 SSD.After a while i was curious about if im using on full performance.Then i found out TRIM Support is not enabled. Some sites says do this do that on terminal to enable trim support but i was wondering can anyone help about this ?
Macbook Pro 2010. Core i7 (non sandy bridge) 4GB Ram.Mac OS X Lion.
Corsair Force GT Sata 3 120GB 555mb/s

I don't have engineering data. But let me give you this. All SSDs sold by Apple and installed into Apple computers have TRIM enabled Automatically by the OS.
All SSDs installed into any PC running Windows 7 TRIM is enable Automatically. It is only with Mac OS X and NON Apple SSDs that TRIM is NOT Automatically enabled.
So what does that tell us. Apple feels so strongly that TRIM should be enabled on Apple SSDs that they do it Automatically. Microsoft feels so strongly that TRIM should be enabled on ALL SSDs that they do it Automatically when using Windows 7.
The only place I have ever read that TRIM support is not needed is on the OWC website promoting their RE-Branded SSDs. You will not find that same info on any website of a major manufacturer of SSDs.
Now Apple does not have one brand of SSDs. Just like the spinning HDD they use they buy the brand/model that fits there price point at any given time they are in the market for more components of that type.
So with all that stated it is my honest and well informed opinion that whenever you are using an SSD you should always enable TRIM support.
I hope that is now clear to you.
You may think differently. That is fine.
But I don't care for your tone.
Thanks.

IMac 3rd Party SSD -- No Trim -- What Now?

After Yosemite, I had the dreaded kext issue due to having a 3rd Party SSD and using SSD Chameleion. After I got that all sorted out, I ended up not enabling Trim on OS X. And I'm fine with that. However, since it has been a month or two since it has been turned off, I am definitely noticing a slow down in my computer on day to day tasks. Is there anything I can do to force a "trim" to get it back into shape, but without editing kext to do so. Anyway around it?

I'm hoping for a new version of Trim Enabler from Cindori that works with kext signing in February http://www.cindori.org
SOme folks are enabling trim and letting it clean up their ssd and then disabling it again.

Enable TRIM on fusion drive?

I have recently installed a 256GB Sandisk SSD into my Mac mini and set it up, in conjunction with the existing 1TB HDD, as a single volume fusion drive (see: https://discussions.apple.com/message/24609725#24609725).
I would like to know whether it is possible to enable TRIM for the SSD while it remains integrated with the HDD as a fusion drive. If so, how can this be done?
Incidentally, the new fusion drive set-up has been outstandingly effective and an absolute breeze to set-up (once the new drive had been installed). It has been the most cost-effective upgrade imaginable for the Mac mini.

Personally, I don't feel you need TRIM enable on a Fusion drive with 3rd party SSDs. I never did when I had an Intel SSD fused.
TRIM Enabler will work on a Fusion drive, though if you feel you need it. See the bottom of the provided link.

Should I enable TRIM for Windows 7 Ultimate 64 for my MacBook Air?

Can I enable TRIM support in Windows 7 for my MacBook Air?

When you installed windows 7, TRIM would have already been enabled if the SSD supports it. Windows 7 auto detects SSD’s
To check TRIM is on at command prompt type
fsutil behavior query DisableDeleteNotify
the result will be 0 if it’s enabled

Increase in shutdown time after enabling TRIM

Hi,
I'm using mid 2012 macbook pro 13" & recently replaced the original hard drive with Corsair Neutron GTX 120GB. After replacing the HDD I freshly installed Mountain Lion. The performance benefits were conspicuous just as any one would expect. Faster boot/shutdown times (~12s/~4s), no jumping apps etc.
TRIM support for SSD was not enabled until I used this app called Trim Enabler (http://www.groths.org/trim-enabler/). A subsequent reboot enabled TRIM (as you can see below).
The weird thing I observed after using Trim Enabler is, shutdown now takes around 20+ seconds. I'm not sure if this due to some clearing activity through TRIM commands issued by OS X (considering TRIM was not active initially) or anything else.
NOTE: I don't see any visible performance impact other than the higher shutdown times.

I'm not sure what actually caused the slower shutdowns, but now ther's no issue at all
Possibility 1:
The local copies made by Time Machine to SSD (when backup disk is disconnected)
Possibility 2:
Considering there were few writes to my SSD earlier without TRIM, after enabling TRIM OSX took some time to get the SSD to optimal performance (may be few background copy/erase operations, I don't know for sure)
Now that I've switched to manual time machine backup (turning it ON only when the backup disk connected & turn OFF once done) the reboot time is back to blazing 2-3 seconds.
BTW those who still want to keep backup running automatically & don't want to keep local snapshots on SSD, should disable it using "$sudo tmutil disablelocal" (there's no GUI way of doing this). With SSD there's a good reason to disable local snaps by Time Machine; space, life, performance etc.

Crucial ssd enable trim?

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