TRIM Support Enabler

[m4rk0]

the correct procedure to install a new ssd and trim it ?

hello !

I will get this awesome Kingston v+100 and I am going to install it in my 2011 MBP.
I was wondering what's the correct way to setup the machine? should I simply install the ssd, install snow leopard and trim it as per instruction of cindori?

I ask it because I am wondering why some time ago I read of this macrumors user who said he installed snow leopard in the regular hard disk and then cloned it to his new ssd isn't it pointless?!

finally I am curious to know if deleting the free space means that the space currently occupied/in use by the operative system won't be trimmed thus showing no benefits by having enabled.

 

[Cindori]

hello !

I will get this awesome Kingston v+100 and I am going to install it in my 2011 MBP.
I was wondering what's the correct way to setup the machine? should I simply install the ssd, install snow leopard and trim it as per instruction of cindori?

I ask it because I am wondering why some time ago I read of this macrumors user who said he installed snow leopard in the regular hard disk and then cloned it to his new ssd isn't it pointless?!

finally I am curious to know if deleting the free space means that the space currently occupied/in use by the operative system won't be trimmed thus showing no benefits by having enabled.

insert disk in computer

boot computer

install snow leopard

install trim patch

--done


if the disk is not used before, you don't need to trim it.

 

[javigar2]

in mbp 13" 2011 goes perfect

I installed a new vertex 3 240 in my mbp 13" (i7, 8gb), with completly OSX fresh install, then i aplied patch and everything goes really perfect.

 

[cybercap]

Hi,

I'm on hackintosh on G41M-ES2L mobo and would like to enable Trim on my X-25 SSD

but there is no trim line in system profiler (see attached)
i've run the patch, no change

any help?

 

[Weaselboy]

Hi,

I'm on hackintosh on G41M-ES2L mobo and would like to enable Trim on my X-25 SSD

but there is no trim line in system profiler (see attached)
i've run the patch, no change

any help?

Maybe make sure you have the latest firmware on your SSD? That is a G2 Intel SSD and they do support the TRIM command.

 

[bozz2006]

So with the patch installed does it do the work automatically on its own, or do I need to go into disk utility and delete free space periodically?

 

[Weaselboy]

So with the patch installed does it do the work automatically on its own, or do I need to go into disk utility and delete free space periodically?

It works on its own after install, but it will not TRIM SSD cells that were used prior to the patch install. To do that run a erase free space. As long as you leave the patch installed you will not need to do erase free space again.

 

[bozz2006]

Thanks for the answer. I'd suspected that but wasn't sure.

 

[jhero]

Just put it on! Thank you

 

[sshimosawa]

Can someone explain to me (in layman terms) how to "undo" the trim hack? My MBPro 2011 13" with a Vertex 3 is getting beachballs constantly.

 

[Cindori]

you click this?

 

[Weaselboy]

Cindori>> Patch still working great for me on Intel 510 SSD, but can you speculate why Sandforce controller SSDs like OWC and Vertex seem to be having so much trouble? Just curious.

 

[Hellhammer]

Cindori>> Patch still working great for me on Intel 510 SSD, but can you speculate why Sandforce controller SSDs like OWC and Vertex seem to be having so much trouble? Just curious.

They have pretty aggressive garbage collection so maybe having TRIM will cause conflicts between the two. Intels have nearly no GC at all and rely totally on TRIM.

 

[Weaselboy]

They have pretty aggressive garbage collection so maybe having TRIM will cause conflicts between the two. Intels have nearly no GC at all and rely totally on TRIM.

Understood, but TRIM works fine on these drives under Windows and it is supposed to be a standard, so one would think if the drive supports the TRIM standard (and these do) and the OS properly implements TRIM, it would just work.

 

[Cindori]

Understood, but TRIM works fine on these drives under Windows and it is supposed to be a standard, so one would think if the drive supports the TRIM standard (and these do) and the OS properly implements TRIM, it would just work.

it's apple trim drivers, apple ssd does not have GC, = drivers prob not considers that, creating conflicts between GC and trim

 

[m4rk0]

insert disk in computer

boot computer

install snow leopard

install trim patch

--done


if the disk is not used before, you don't need to trim it.

right, thinking about it, it makes sense now: if it hasn't been used before, why would I need to delete space which hasn't been occupied yet.

I am wondering whether I should run or not the terminal commands you wrote ?

EDIT: I missed this one: "If you run Erase Free Space, you should run these commands in the terminal afterwards". I guess I am done with just enabling trim then.

 

[Cindori]

right, thinking about it, it makes sense now: if it hasn't been used before, why would I need to delete space which hasn't been occupied yet.

I am wondering whether I should execute or not the terminal commands you wrote ?

the patch does them automatically, but if you experience long boot times (@ spinning wheel for longer then 5 sec) then do them

 

[m4rk0]

the patch does them automatically, but if you experience long boot times (@ spinning wheel for longer then 5 sec) then do them

initially i thought i didn't have to run them; after a few boots i noticed the boot time decreased and went on pair with the scorpio black 750GB i had before so i ran the commands and it seems i got back a few seconds.

so, despite the fact i didn't erase the free space because i didn't need to, i still had some benefits from running the commands.

is it correct what i did?

i7:~ marco_admin$ sudo chown root:admin /
Password:
i7:~ marco_admin$ sudo kextcache -system-prelinked-kernel
/System/Library/Extensions/IOSerialFamily.kext/Contents/PlugIns/InternalModemSupport.kext doesn't support architecture x86_64; omitting from prelinked kernel.
i7:~ marco_admin$ sudo kextcache -system-caches
i7:~ marco_admin$ exit
logout

edit
i am still having like 10 secs from the spinning disc to desktop

 

[Cindori]

Boot times can be alot of other stuff, you have a new disk, Im guessing you are installing a bunch of things?

 

[m4rk0]

Boot times can be alot of other stuff, you have a new disk, Im guessing you are installing a bunch of things?

honestly I didn't install so much software , I have the exact same configuration I had when I was running the Scorpio hard disk. the strange thing is that booting time varies from 5 to 10 seconds (after the spinning disc) without any particular reason the latter is much more likely to happen anyway.

 

[mgradilone]

Just used the enabler - worked great!

I followed the instructions, this worked like a charm! thanks to all who put this together!

MBP 3,1 (late 2008 i think)
Crucial CT256_M255 SSD

Ran the enabler, erased free space, and then the system commands. 1st boot was slow but after that fine.

profiler read and write speeds went from 50's to 150s! I have my SSD back!

 

[RipeRetina]

insert disk in computer

boot computer

install snow leopard

install trim patch

--done


if the disk is not used before, you don't need to trim it.

Oh ok, I think I saw you say this before but I guess I just wanted to see what TRIM was about. So basically, is that why TRIM made my macbook a bit glitchy at times? Cus I bought my SSD new? So, what you are saying is, that the only reason you would want to use TRIM is if you got your SSD from someone and you had to reformat it?

 

[Cindori]

Oh ok, I think I saw you say this before but I guess I just wanted to see what TRIM was about. So basically, is that why TRIM made my macbook a bit glitchy at times? Cus I bought my SSD new? So, what you are saying is, that the only reason you would want to use TRIM is if you got your SSD from someone and you had to reformat it?

no... please read up on TRIM, it's been explained many times...

 

[Weaselboy]

Oh ok, I think I saw you say this before but I guess I just wanted to see what TRIM was about.

http://en.wikipedia.org/wiki/TRIM

Here is a wiki article on TRIM that may help you understand.

 

[RipeRetina]

Ok guys, well thanks for the replies. I re-applied the trim patch, erased free space and restarted twice, everything seems fine. No glitching like last time, so far so good!