Comments on: Enable TRIM for All SSD’s in Mac OS X Lion

By: Suo

Suo — Mon, 12 Nov 2012 03:56:23 +0000

I left a part out. The goals is that sometime when the SSD is not being heavily used, it will find time to erase the deleted data, leaving those blocks ready for the fastest possible write performance.

By: Suo

Suo — Mon, 12 Nov 2012 03:53:57 +0000

It depends if it is a software RAID or hardware RAID. If it is software, then yes. If you are using a hardware RAID controller, then that controller’s firmware needs to support TRIM, and there would be no need to tweak anything in Mac OS.

By: Suo

Suo — Mon, 12 Nov 2012 03:47:16 +0000

It doesn’t matter when you enable it, you will get the full benefit anytime.
Without TRIM enabled, the files are delete immediately, but the OS has to wait while the erase operation completes. Once TRIM is enabled, the SSD manages the reuse of blocks internally and the OS is free to move onto the next operation. The data may not actually get deleted with TRIM. Avoiding these extra read/write cycles is what increases performance and the life of the drive. The SSD just remembers that the block is ready for reuse, and when new data comes along it can write it to the “free” block.

By: Enter SSD ~ Solid-state drives | Andy on Tech

Enter SSD ~ Solid-state drives | Andy on Tech — Sun, 23 Sep 2012 14:20:34 +0000

[...] How long will they last? SSDs will wear out over time as each cell in a flash memory has a limited number of times it can write and erase. TRIM technology is a part of SSDs, this dynamically optimises read/write cycles. In normal use I would think you are more likely to change the machine before worrying about an SSD actually wearing out. TRIM tweaks may be required depending on OS, I certainly had to do this when using with Linux. There is a utility available for Macs that do not include SSD support here. [...]

By: Dani

Dani — Thu, 02 Aug 2012 09:54:41 +0000

Does it matter when I enable TRIM? I mean, I installed the OS several days ago and I did already delete some data. I’m enabling TRIM now, do I have to reinstall or just install and TRIM will take care of the already deleted items?

Best regards

By: JettaRed

JettaRed — Thu, 26 Jul 2012 02:40:49 +0000

TRIMEnabler seems to work well for Mountain Lion 10.8.

By: Sean

Sean — Wed, 20 Jun 2012 03:03:50 +0000

would TRIM enabler work on 2 ssds, raid 0 in a mac pro 2009?

By: Nik

Nik — Fri, 13 Jan 2012 06:23:07 +0000

By chance I just restored my SSD from backup. It’s an Intel X-25M G2. No doubt thanks to TRIM enabler, my speeds doubled (back to factory speeds I guess)!

XBench index as of last year:102. After the restore with TRIM enabled: 270!

So yeah – do it! The performance penalties for not having TRIM enabled are severe.

By: Modernape

Modernape — Sun, 08 Jan 2012 16:12:48 +0000

This applies to all Sandforce drives which have their own Garbage Collection firmware – enabling TRIM will cause slow-downs rather than improvements.

By: 在Mac OS X lion中启用固态硬盘的TRIME功能 | ssd

在Mac OS X lion中启用固态硬盘的TRIME功能 | ssd — Sun, 08 Jan 2012 06:58:07 +0000

[...] Enable TRIM for All SSD’s in Mac OS X Lion [...]

By: Joseph

Joseph — Wed, 04 Jan 2012 22:49:32 +0000

Just did this every thing seems fine.

By: Joseph

Joseph — Wed, 04 Jan 2012 22:36:02 +0000

Can you restore from a back up of the next and then use the newer tool?

By: Dmitry Dulepov

Dmitry Dulepov — Wed, 04 Jan 2012 17:59:30 +0000

TRIM on non-Apple SSDs conflicts with FileVault2. If you enable both, your drive will be corrupted.

I believe Apple did not enable TRIM on other drives for a reason. So I would not recommend this. At least, watch your disk for corruption.

By: root86.org

root86.org — Wed, 04 Jan 2012 05:56:25 +0000

this tool slows down 2 of my Macs with SSD and 2 Hackintosh’s … I will never use it again !!!

By: RCook

RCook — Tue, 03 Jan 2012 21:34:35 +0000

I used the guide you linked to a while back, I don’t see how copying and pasting 4 commands is not for the faint of heart but whatever.